im using next-auth 5.0.0-beta.15 for my authentication

i tried just returning the user through credentials, i tried making some changes to the auth.config.ts file but nothing worked

auth.ts

//imports and other functons

    export const { auth, signIn, signOut } = NextAuth({
    ...authConfig,
    providers: [Credentials({
    
    async authorize(credentials) {
      
      const parsedCredentials = z
        .object({ email: z.string().email(), password: z.string().min(6) ,userType: z.string()})
        .safeParse(credentials);
    
      if (parsedCredentials.success) {
          
          try{
            const user = await getUser(parsedCredentials.data);
            if (!user) return null;
            return user;
          }
          catch(error){
            //catch error
          }
      }
      return null;
    },

    }),
    ],
    });

auth.config.ts

import type { NextAuthConfig } from 'next-auth';

export const authConfig = {
trustHost: true,
pages: {
signIn: '/login',

},
callbacks: {
authorized({ auth, request: { nextUrl } }) {
const isLoggedIn = !!auth?.user;
const isOnDashboard = nextUrl.pathname.startsWith('/dashboard');
if (isOnDashboard) {
if (isLoggedIn) return true;
return false; // Redirect unauthenticated users to login page
} else if (isLoggedIn) {
return Response.redirect(new URL('/dashboard', nextUrl));
}
return true;
},
},
providers: [], // Add providers with an empty array for now
} satisfies NextAuthConfig;

i want next auth to create a session where all the data i bgring form the backend is stored as session, currently the stored session is from
node_modules > @auth > core > src > Types

export interface DefaultSession {
   user?: User   
expires: ISODateString }

export interface Session extends DefaultSession {}

export interface User {
  id?: string
  name?: string | null
  email?: string | null
  image?: string | null

}

'''

the user i get is 

user: { name: ‘student 0’, email: ‘[email protected]’ },
expires: ‘2024-05-26T04:22:12.637Z’
}

the user i want to get is 

user: {
id: ‘023’,
name: ‘student 0’,
email: ‘[email protected]’,
userName: ‘3f828b661d8d’,
emailVerified: undefined,
phoneNumber: undefined,
role: ‘STUDENT’
}

i have tried directly changing this interface but nothing happened, im using  "next": "^14.1.3", the auth files are at the root directors of the projeact and customers and employes