Librewolf is first option in choice of privacy! It is a fork (support all extensions from Firefox, same base) of Firefox wich is selling certain data, for this Firefox is not anymore my choice.
Starting with June 2025 all Browsers with Blink engine (Chrome, Brave, Davinci, Egde ecc.) make it more harder for adblocker addons to block advertising, so that for example uBlock will only work on Librewolf and Firefox (Gecko engine). Webkit from Apple in Safari will also not change this for the moment.

The blink engine is developed by google, so it's not hard to understand because.

WebGL is not evertime enabled on Librefox, but you can test to turn it on with:

about:config

webgl.enabled

if ist not working you can also:

webgl.force.enabled

In my case on a Intel N100 the 4k work better then on Firefox.