Raspberry Pi Zero 2W seems to be shutting down after a day or two

I've had dietpi installed on a raspberry pi zero 2w and it's been working fine for the past month but lately I've noticed that it's been shutting down after a day or so (depends). I'm not really sure what's going on, could someone please point me in the right direction as to what the issue could be. Thanks.

For preface, all that the raspberry pi does is it's a tailscale subnet router for frigate to be able to see cameras at a separate location. Any help would be appreciated.