uMatrix isn’t maintained anymore, but you can actually do this directly in uBO now!

https://github.com/gorhill/uBlock/wiki/Per-site-switches#no-scripting

Keymonk. It actually still mostly works if you find an old apk, I’m using it now. The suggestion bar is broken and it’s a little buggy, but god most of the time it still flies, security risks be damned.

Keyboard 69 was another option, but it’s also abandoned and I found it much more bloated and buggy.

What I wouldn’t give for a good open source two finger swiping keyboard…