Things to consider before erasing the whole mess and starting over, maybe from a backup if lucky?

I'm having a couple of porblemson my iPhone se2020, and I'm considering blowing it up and starting over. The first problem is the app library popping up all the time. This is an old one, but I just got it. I even updated to the latest public beta hoping to make it go away, but no such luck. The second problem is that the CNBC app hasn't worked right in several months, and I'd like to have it back; it works fine on my old phone, and I can't find any complaints about it on newer IOS versions, so I'm pretty sure it is just me. Backing up the current mess first may or may not work, and I do have ab ackup from September, but CNBC was messed up even then.

Anywya, has for the people who've taken this drastic step, what did you lose that you didn't consider going in? I haven't started over in recent memory, if ever, so to me it is either start over or buy a new device.