Search result ads are some of the most harmful ads, and Google's ads in particular are probably the number one cause of fraud, scams, and malware on the entire planet. It's a shame that Firefox whitelisted these, but I'm sure they did it both because Google pays for their existence but also Apple themselves probably wagged their finger for some reason.

Wipr is the best adblocker on iOS that I’ve tested. Indie dev, gives you a lot for free, has a way to block outside of web views too. Big fan, I never had consistent ad blocking experience on iOS until I used it

UBlock lite extension on Safari blocks ads on YouTube? Is Brave not better?