You can buy replacement button boards ... it with your Switch. You'll then be able to use it on its own. Select "Controllers" ...

Until transparent replacement shells for the Nintendo Switch 2 hit the market, Dbrand’s new Teardown skin is the easiest way ...

Luckily, the Nintendo Switch 2 ... customize every button on your Pro Controller or Joy-Cons. Simply press A on any button option here and choose the button you'd like to replace it with.