diff --git a/backend/src/main/java/de/szut/casino/security/GitHubService.java b/backend/src/main/java/de/szut/casino/security/GitHubService.java
index a345825..9ef8274 100644
--- a/backend/src/main/java/de/szut/casino/security/GitHubService.java
+++ b/backend/src/main/java/de/szut/casino/security/GitHubService.java
@@ -25,6 +25,8 @@ import java.util.*;
 
 @Service
 public class GitHubService {
+    private static final Logger logger = LoggerFactory.getLogger(GitHubService.class);
+
     @Value("${spring.security.oauth2.client.registration.github.client-id}")
     private String clientId;
 
@@ -69,27 +71,32 @@ public class GitHubService {
             );
 
             Map<String, Object> responseBody = response.getBody();
+            logger.info("GitHub token response: {}", responseBody);
 
             // Check if there's an error in the response
             if (responseBody.containsKey("error")) {
                 String error = (String) responseBody.get("error");
                 String errorDescription = (String) responseBody.get("error_description");
-
+                logger.error("GitHub OAuth error: {} - {}", error, errorDescription);
                 throw new RuntimeException("GitHub OAuth error: " + errorDescription);
             }
 
             String accessToken = (String) responseBody.get("access_token");
             if (accessToken == null || accessToken.isEmpty()) {
-
+                logger.error("No access token received from GitHub");
                 throw new RuntimeException("Failed to receive access token from GitHub");
             }
 
+            logger.info("Received access token from GitHub");
+
             // Get user info
             HttpHeaders userInfoHeaders = new HttpHeaders();
             userInfoHeaders.set("Authorization", "Bearer " + accessToken);
 
             HttpEntity<String> userInfoRequestEntity = new HttpEntity<>(null, userInfoHeaders);
 
+            logger.info("Making request to GitHub API with token: {}", accessToken.substring(0, 5) + "...");
+
             ResponseEntity<Map> userResponse = restTemplate.exchange(
                     "https://api.github.com/user",
                     HttpMethod.GET,
@@ -98,6 +105,7 @@ public class GitHubService {
             );
 
             Map<String, Object> userAttributes = userResponse.getBody();
+            logger.info("Retrieved user info from GitHub: {}", userAttributes.get("login"));
 
             // Get user emails
             HttpHeaders emailsHeaders = new HttpHeaders();
@@ -129,6 +137,8 @@ public class GitHubService {
                 email = (String) emails.get(0).get("email");
             }
 
+            logger.info("Using email: {}", email);
+
             // Process user data
             String githubId = userAttributes.get("id").toString();
             String username = (String) userAttributes.get("login");
@@ -140,6 +150,7 @@ public class GitHubService {
             if (userOptional.isPresent()) {
                 // Update existing user
                 user = userOptional.get();
+                logger.info("Found existing user with providerId: {}", githubId);
             } else {
                 // Check if email exists
                 userOptional = userRepository.findByEmail(email);
@@ -148,6 +159,7 @@ public class GitHubService {
                     user = userOptional.get();
                     user.setProvider(AuthProvider.GITHUB);
                     user.setProviderId(githubId);
+                    logger.info("Updating existing user with email: {}", email);
                 } else {
                     // Create new user
                     user = new UserEntity();
@@ -158,6 +170,7 @@ public class GitHubService {
                     user.setEmailVerified(true);
 
                     user.setBalance(new BigDecimal("1000.00"));
+                    logger.info("Creating new user for: {}", username);
                 }
             }
 
@@ -170,10 +183,12 @@ public class GitHubService {
 
             // Generate JWT token
             String token = jwtUtils.generateToken(authentication);
+            logger.info("Generated JWT token");
 
             return new AuthResponseDto(token);
 
         } catch (Exception e) {
+            logger.error("Error processing GitHub code", e);
             throw new RuntimeException("Failed to process GitHub authentication", e);
         }
     }
diff --git a/backend/src/main/java/de/szut/casino/security/oauth2/GitHubOAuth2UserInfo.java b/backend/src/main/java/de/szut/casino/security/oauth2/GitHubOAuth2UserInfo.java
index 77ac16c..baf8995 100644
--- a/backend/src/main/java/de/szut/casino/security/oauth2/GitHubOAuth2UserInfo.java
+++ b/backend/src/main/java/de/szut/casino/security/oauth2/GitHubOAuth2UserInfo.java
@@ -22,4 +22,9 @@ public class GitHubOAuth2UserInfo extends OAuth2UserInfo {
     public String getEmail() {
         return (String) attributes.get("email");
     }
+
+    @Override
+    public String getImageUrl() {
+        return (String) attributes.get("avatar_url");
+    }
 }
\ No newline at end of file
diff --git a/backend/src/main/java/de/szut/casino/security/oauth2/OAuth2UserInfo.java b/backend/src/main/java/de/szut/casino/security/oauth2/OAuth2UserInfo.java
index 5019bb1..3acd762 100644
--- a/backend/src/main/java/de/szut/casino/security/oauth2/OAuth2UserInfo.java
+++ b/backend/src/main/java/de/szut/casino/security/oauth2/OAuth2UserInfo.java
@@ -1,10 +1,7 @@
 package de.szut.casino.security.oauth2;
 
-import lombok.Getter;
-
 import java.util.Map;
 
-@Getter
 public abstract class OAuth2UserInfo {
     protected Map<String, Object> attributes;
 
@@ -12,9 +9,15 @@ public abstract class OAuth2UserInfo {
         this.attributes = attributes;
     }
 
+    public Map<String, Object> getAttributes() {
+        return attributes;
+    }
+
     public abstract String getId();
 
     public abstract String getName();
 
     public abstract String getEmail();
+
+    public abstract String getImageUrl();
 }
\ No newline at end of file
diff --git a/backend/src/main/java/de/szut/casino/security/oauth2/UserPrincipal.java b/backend/src/main/java/de/szut/casino/security/oauth2/UserPrincipal.java
index 1460982..6c993a0 100644
--- a/backend/src/main/java/de/szut/casino/security/oauth2/UserPrincipal.java
+++ b/backend/src/main/java/de/szut/casino/security/oauth2/UserPrincipal.java
@@ -1,8 +1,6 @@
 package de.szut.casino.security.oauth2;
 
 import de.szut.casino.user.UserEntity;
-import lombok.Getter;
-import lombok.Setter;
 import org.springframework.security.core.GrantedAuthority;
 import org.springframework.security.core.authority.SimpleGrantedAuthority;
 import org.springframework.security.core.userdetails.UserDetails;
@@ -14,14 +12,11 @@ import java.util.List;
 import java.util.Map;
 
 public class UserPrincipal implements OAuth2User, UserDetails {
-    @Getter
     private Long id;
-    @Getter
     private String email;
     private String username;
     private String password;
     private Collection<? extends GrantedAuthority> authorities;
-    @Setter
     private Map<String, Object> attributes;
 
     public UserPrincipal(Long id, String email, String username, String password, Collection<? extends GrantedAuthority> authorities) {
@@ -51,6 +46,14 @@ public class UserPrincipal implements OAuth2User, UserDetails {
         return userPrincipal;
     }
 
+    public Long getId() {
+        return id;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
     @Override
     public String getPassword() {
         return password;
@@ -96,6 +99,10 @@ public class UserPrincipal implements OAuth2User, UserDetails {
         return attributes;
     }
 
+    public void setAttributes(Map<String, Object> attributes) {
+        this.attributes = attributes;
+    }
+
     @Override
     public String getName() {
         return String.valueOf(id);