Panic-full, bug_type 210

Hi, everyone. My iPhone XR (non-jailbroken) started rebooting randomly (no specific app causing it as far as I can tell) right after my update to iOS 14.2 about 2 months ago. I was very busy with work and my studies then so I didn't really pay too much attention to it since I barely used my phone at the time. But now that I have more free time and I've been using my phone more often, I noticed that the rebooting happened more often as well. My phone charges fine and the battery does not heat up to unreasonable levels (only ever gets mildly warm to touch on occasions).

I've done just about everything one can do to try and fix it without having to open the phone (forced restarting to DFU). I was hoping the iOS 14.3 update would fix it but it did not. I tested out a lot of potential triggers and I have determined that it reboots whenever I have multiple apps running in the background or when I have some RAM-heavy apps open (e.g., Facebook, Messenger, Amazon, Microsoft Teams, etc.). It's gotten to a point where I can't use my phone for more than 5 minutes before it does a reboot.

I've attached the first part of the log of the panic.ips file that the analytics generates each time the reboot happens (won't fit the whole log because too long). I appreciate any insight you can give regarding the matter.