In session table, user id is null when user visit guest page.
Route::get('/', [HomeController::class, 'index',])->name('home');
Route::group(['middleware' => ['auth:user']], function () {
Route::get('/dashboard', [HomeController::class, 'dashboard'])->name('dashboard');
});
When user visit dashboard, session table has user id and same user goes to home page user id is now set as null in session table.