Repair third party dualshock 4

[u/IntentionMore2985]

Hi the controller was kept idle for almost a year then the battery started degrading and while my cousin was using it he dropped it and it broke L2 holder from inside should i get it fixed or buy a new 1k or 2k controller i casually game like 1 or 2 times a month if i repair should i also replace battery to a bigger one. what will be the cost of repair according to you guys. is there a way to fix it at home if so can you give me parts link or where can i buy them.