was the guide I used
Look into Kiwi Browser. It's a chromium based android browser that supports extensions https://kiwibrowser.com/
I've been using it alongside FF for Extensions, but it's nicer (+faster) than FF and has features like pull down to refresh a page, native web-app support etc.
If my stable Firefox for Android gets updated into a browser without uBlock Origin I will immediately switch to some chromish alternative with adblocking. There's no reason for firefox for android once extension support is gone, featurewise.
edit: oh, it looks like that's missing, too. Nooooo....
I am on a slow university network and I keep JavaScript off by default using UBO. It takes 3 clicks to enable it for sites that really need it, but web is much faster with it.
My favorite feature is the "fire" icon that closes all tabs, deletes all cookies and history and basically reinitializes the browser.