That's actually a big one for me too. I have an extension running called "minimal consent" but it's deprecated and never managed the more complicated dialogues. I also disable personalised ads on every platform (often defaults to enabled)
It's sometimes annoying but all in all, I get the most random ads and i'm happy about it.
As a rule of thumb, if the cookie dialogue does that spinny "saving prefernces" loading screen for more than 10 seconds, the page probably wasn't worth my click anyway and I close it.