jewtube revanced will get those jewy shorts off the main page for you. Along with ad block, sponsor block, and a working dislike button.

lol stay away from the shorts and tiktoks except thru 3rd party sources. They're deigned to dopamine fuck your brain. At least yt has a hide for 30 days feature on that shelf

Download the Youtube Redux addon. It restores the UI back to 2015, removes the shorts tab, and allows you to watch shorts as actual videos.