My tablet keep opening Samsung Internet and/or Chrome to show me ads. I've blocked the sources of the ads, but the apps still open. I've tried freezing them, but they unfreeze themselves.
Also, Settings keeps downloading data in short bursts.
There are some other less frequent weird things that happen by themselves, but let's solve the first.
Download Malwarebytes from the Play Store and run it. It should find the offending malware.
Galaxy S21 Ultra 512g(VZW), Galaxy Book (original, VZW), Tab S8 Ultra, Tab S4, Galaxy Watch3(VZW), M8 Smart Monitor