I use ad blockers and open source privacy focused software whenever I can but occasionally I have to use computers that don’t belong to me or an older phone where my usual applications aren’t installed and seeing all the advertisements just feels dirty and dystopian.
I think the worst ads are the text to speech ones that say “Download this app today”. The unblinking energenic people saying you can make a living at home are probably a close second.
Try adguard. Its a system wide blocker(blocks ads in most apps too) and needs no root. Its paid. For free you can use blockada version 5. Get it on fdroid. Or just use adguard dns.