How to go about fixing an iPhone 12 Pro that has damage to Wifi and Bluetooth hardware?

Hi everyone, so I have an iPhone 12 Pro that has the rear basically totalled... I've dropped it a lot of times, which has lead to wifi and bluetooth connection issues. To sum up, my wifi would disconnect then reconnect instantly, and this would happen randomly. It could be once every 5 or 10 minutes, or it can happen multiple times in a minute. My airpods would disconnect then reconnect whenever I am not playing music, and again it would happen randomly.

I think I'm going to tough it out and leave the phone as is because it's really more of an annoying issue than a major one. But if I were to get the phone completely fixed, would an Apple store replace/fix the the internal hardware that is causing the wifi/bluetooth issues? Such as the wifi antenna? Or would I have to get the entire motherboard replaced? Would the store even attempt to fix it or would they just tell me that I would need to buy a new phone?

Thanks for any information about this.