The greatest thing I ever did to help non technical people is to make sure they all have adblockers. I can only install ublock on android firefox and this is why I never recommend iphones. Too much malvertisement crap that apple won't let me block.
Orion browser for iOS allows both chrome and firefox extensions to be installed on iphones. (for now anyway, I'm sure apple will yeet them whenever they find out about it)
You need to change some settings first, but it worked when I put the firefox version of ublock origin on a phone.
I have my DNS on my android phone set to dns.adguard.com, which has the benefit of blocking ads in even "free" apps/games that are littered with them. This works even on mobile data, so it's better than even a pihole.
I wanted to do the same to my boyfriend's iPhone after seeing him sit through probably a dozen ads in one sitting with all the free games he has downloaded, but I found out that Apple literally does not allow you to change your DNS for mobile networks, and you have to manually change it for each wifi network. Weird for a company that claims to prioritize "privacy".
My understanding from Brave is that this year Google is essentially disabling v2 add-ons, but the code will still be in Chromium (for other things Google does), so Brave can just re-enable it.
But Brave expects that Google will actually pull the code out of Chromium next year -- when that happens, it is unlikely anyone else will have the time to maintain patches to put it back in.