The POST method is not supported for this route. Supported methods: GET, HEAD for register users. - in laravel ?

You cant run a create or store because your routes are set to GET in your web.php, change them to

Route::post('/registerCreate', [App\Http\Controllers\Auth\RegisterController::class, 'create'])->name('register.create');

Route::post('/registerStore', [App\Http\Controllers\Auth\RegisterController::class, 'store'])->name('register.store.usu');