Videos in my feed rarely get age restricted, so i just change the url from Youtube.com/XXXX to yewtu.be/XXXX" works on 99% percent and i only use it when there is a video i really want to watch.Google is trash. Try Invidious. You can't post or do account stuff with it, but who cares so long as you can watch the videos without ads or trackers? It even lets you download the videos. If one instance goes down, just switch to another.
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Yarr.