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YouTube's ad problem just got worse: Users now seeing 90-second unskippable ads!
(www.androidauthority.com)
This is a most excellent place for technology news and articles.
If you use a Google service on a locked down Google device, what magic fix are you hoping for? There are limits. If you're unwilling to make any meaningful change, then unfortunately you're out of luck and either need to suck it up and watch the ads, or pay Google for an ad-free experience. Or you can leave their ecosystem and be free.