Laravel 7 Passport with different and multiple Models - api

Question

I am currently developing an API with Laravel 7 and I want to authenticate users coming from different applications with Passport : 3 applications communicate with the API, so 3 different user tables.
It's working fine with the User model provided but when I use my own model, I can't login : it responds "Bad credentials" with the good credentials.
So my question is : Is it possible to use a different model from User provided and also multiple model at the same time for each APP/Client ?
Here is a diagram of the structure I want : Diagram
My App\User :
use Illuminate\Foundation\Auth\User as Authenticatable;
use Illuminate\Notifications\Notifiable;
use Laravel\Passport\HasApiTokens;
class User extends Authenticatable{
use Notifiable, HasApiTokens;
....
}
Here is my login function :
public function login(Request $request)
{
$request->validate([
'email' => 'required|string|email',
'password' => 'required|string'
]);
$credentials = request(['email', 'password']);
if(!Auth::attempt($credentials))
return response()->json([
'message' => 'Bad credentials'
], 401);
$user = $request->user();
$tokenResult = $user->createToken('Personal Access Token');
$token = $tokenResult->token;
$token->expires_at = Carbon::now()->addHours(1);
$token->save();
return response()->json([
'access_token' => $tokenResult->accessToken,
'token_type' => 'Bearer',
'expires_at' => Carbon::parse(
$tokenResult->token->expires_at
)->toDateTimeString()
]);
}
}
My config/auth
'guards' => [
'web' => [
'driver' => 'session',
'provider' => 'userstest',
],
'api' => [
'driver' => 'passport',
'provider' => 'userstest',
'hash' => false,
],
], 'providers' => [
'userstest' => [
'driver' => 'eloquent',
'model' => App\User::class,
],