I've gotten that as well. I have had success using rubbing alcohol on those spots. Also helps to use an alcohol aftershave.

Here is a relevant video to this subject. https://www.youtube.com/watch?v=IP2EKTCngiM

I have android 9.

I've been using the Feedbro extension in Firefox for about 4-5 years now. It is pretty great.

Nightmare Reaper