replacement parts for side buttons

This seems like an older phone. But if you still use it and like it whatever works for you! Best bet it to find one for super cheap thats broken on eBay that has the parts you need in good condition and get that and just replace whats broken on yours with the one from eBay. The thing with these phones is there old and cheap so even if you cant find one broken you might just want to get a brand new or used one of these phones in good condition instead.

Hope this helps and good luck fixing!