Extensions That i Recommend

Ublock Origin (ublockorigin.com/) not just a "adblock"!

Sponsorblock (sponsor.ajay.app/) Skip sponsor and other segments on youtube! All adjustable!

Dearrow (dearrow.ajay.app/) Better youtube titles done by people! (paid but keys aren't one time use and not aligned to someone so you can just use someone's key)

Tampermomkey (tampermonkey.net/) Browser script manager.

Youtube Redux (github.com/omnidevZero/YouTubeRedux) Replicates old youtube layout

Return Youtube Dislike (returnyoutubedislike.com) What it says on the tin.

TinEye Reverse Image Search (addons.mozilla.org/en-US/firefox/addon/tineye-reverse-image-search) What it says on the tin (pun intended).

 Stopaganda Plus (https://addons.mozilla.org/en-US/firefox/addon/stopaganda-plus) shows bias and accuracy of a website or subreddit using it's database (mediabiasfactcheck.com).

BlockTube (github.com/amitbl/blocktube) youtube content blocker.