as others mentioned, just clear your cookies on a regular. don't bother opting out of any companies targeting because that is also cookie based and next time you clean out your cookies you will just wipe out the opt out cookie and be retargeted again.
also, many networks are working on a last view model so they can still get a post view conversion regardless of if you clicked on the ad or not. Ctr is a barely looked at metric these days.
it can get even worse though, I work at a company that does data prospecting for ad targeting and we analyze browsing patterns of converting customers and start targeting ads to others with the same browsing patterns because they will be more likely to convert because they have a high match to current converters. you can get targeted the fuck out of something that you don't even know you want yet until you see the ad. sounds like bs but it is highly effective.