Starting to notice a lot of issues

-My fingerprint sensor has 100% stopped working. I've checked every solution and fix online that I could find, and even asked my father (a cellular sales rep) for solutions and we come up blank. It's as though the phone doesn't recognize that there's a sensor there.

-Receiving texts are very hit-or-miss. Every so often, I won't be receiving texts, only finding out because people ask me why I haven't answered texts. I restart the phone, and they usually come through then. Not sure if this is device-side or carrier.

-Freezing, stuttering, screen burn-in, call drops, and other issues.

I've had a G3, G4, G5, and V20. All of them had issues, the G4 most notably having bootlooped. Admittedly I'm a heavy user but this is starting to frustrate me. Are there any solutions I could try to solve any of these issues? I've cleared caches, cleaned up data, even factory reset a few times. I don't know what to do at this point.