Risk of fixing a hardware problem

So my iPhone13 pro fell, it just a little part of the back case fell off. This happened last year August and I didn’t have any problems with the phone but last month the phone stopped charging like it was really slow when it charged then it just suddenly stopped. I got the phone fixed but I noticed that it wasn’t connecting to wifi and the Bluetooth didn’t work

the person that fixed the phone said it’s the hardware chip (can’t remember the name)responsible for wifi and Bluetooth and anything related to it that is faulty.

the risk to fix it is a 50/50 meaning either it works and the phone is restored or it doesn’t and the phone stops working 😭 what do I dooo