Use an adblocker, set it to be as restrictive as possible. Set “do not track” in your browser’s settings. Etc. And you won’t see as many creepy ads based on your activity.
Also, if websites offer a method of opting out of certain types of cookies - remove/opt out of all that are not required for site functionality.
As a result, I see very few ads. And the few that somehow get past my filters are often completely irrelevant to me!
I hadn’t noticed any creepy ads here on Linux.org before. But that might be because I’ve been using adblockers and locking things down since long before I signed up here!