If I could choose only one browser extension to ever install, it's uBlock Origin.

This add-on makes the web usable again. It also makes it more secure by eliminating common dark patterns that trick users into clicking things they didn't intend to.

An excellent ad blocker.
If it allowed to disable individual filter rules, instead of whole lists, it would be perfect.

I've been using this awesome addon for quite a long time.
However today it stopped working on YouTube.

No problem, went to the github page, enabled Beta version of the addon and now my YouTube problem seems resolved.

It works above and beyond the most stringent of expectations.

Ublock stops my YouTube Playlists from auto playing.

nice addon

Used to use ABP. After switching I found that firefox RAM consumption reduced a lot.