Volume down button is stuck

So, at some point, the volume down button has become “stuck”. I say “stuck” because it moves regularly and sometimes I don’t have the issue. But most of the time, the volume keeps turning down all by itself no matter how many times I turn it back up.

I have tried using compressed air around the button exterior and have even wedged a needle between the button to get out anything that may have embedded itself but nothing seems to work.

If I have to take it apart to fix it, that’s fine. But I’ll need to know how since I can’t find a guide on it any place