Putting apps to deep sleep may cause issues depending what app it is.
Also not letting certain apps permissions can mess with other things the app may rely on.
You could download Good guardians and use the app optimiser and see if it helps.
Also make sure all apps are updated in both stores especially if you have updated to one ui 5.1
"WI-FI went down for five minutes, so I had to talk to my family.
They seem like nice people"