When I unlock my A20 phone to use an app or the phone, the OS opens random apps. These apps can be anything at all that is on my phone. Frankly, this really makes me angry!
Welcome to Android Central! So you're certain these apps weren't open the last time you turned off the screen (or the screen timed out)? Does this also happen in Safe Mode? www.samsung.com/us/support/answer/ANS00062983/