Troubleshooting Instability Pi 4

I am running HA on a Raspberry Pi 4 with a conbee stick to control zigbee devices. Everything for the better part of a year has been great. But recently, I have run into stability issues. Everything runs fine until suddenly the system crashes. I have tried replacing the SD card with a high endurance card as well as changing to a better power source. At this point I am at a loss for what to do next and have resorted to power cycling every time it crashes and that normally gives me one day of solid use before I need to do it again.

Any advice it greatly appreciated!

What installation method are you using? HAOS or something else?

Should have mentioned that sorry! Yeah HAOS.

I assume you are using the latest HAOS and Supervisor versions - there was a firmware release for the RPI that caused lock ups and it is resolved with later versions of HAOS/Supervisor.