I almost give up. I tried many many things but my samsung s23 is killing important apps and I miss notifications. As soon as I unlock my phone, all of them showing up instantly. I’m missing messages and important notifications. I’m constantly checking phone because of it. BTW, it’s working sometimes I don’t know how and when it decides to kill my apps. I disabled any memory and battery related optimizations and mark my important apps as unrestricted and never sleep but it doesn’t work mostly
It doesn’t work even after rebooting the phone again? Weird. Cleaning app data for these apps does stop them from working, but opening the Play Store and doing something inside (eg: checking for app updates) and then rebooting makes everything work again on my devices.
I’m testing now but this seems to fix the issue.