I've run both the App Booster and Memory Guardian from the Good Guardians app, but that hasn't fixed the issue. I can't fins any accessible methods of clearing the devices cache, and none of the guides on how to start the phone in recovery mode are working. For the record my phone is the S20 FE 5G model. I don't know what the Activity Launcher is. Using the search doesn't show any such app or option on my device.