Some of them may be hardware related - any time I sign in to one of my TCL TV’s with a Premium account, the first result in any search is always one marked Sponsored. It’s gash, but it doesn’t happen on any other of my devices than that TCL TV which makes me think it’s some sort of vendor problem.

Either way, YouTube/Google/Alphabet/whoever won’t give a fuck so if it’s that bad, then vote with your wallet.