Now just need to do process of elimination, see which one is the cause .No it is the sign of app problems as problem went away in safe mode.
Great you found the trouble app, yeah any of those device would be a nice upgrade.Thanks was Light Flow Legacy. Apparently it causes random reboots on Pixel 2/2XL on Android 11. Oh well. Next phone is a Pixel 5, One Plus 8T, or Galaxy S20 FE so can't use on them anyways.