I use tamperkonkey on Chrome and Safari, and both extensions stopped working at the same time both in Chrome and Safari.
I now use them in Firefox and everything is working properly.
I would suggest checking out Librewolf.net browser, it's a great fork of Firefox that follows all the recent updates, and removes all the crap and bloatware from Mozilla code.
You won't notice the difference because it looks the same as Firefox.
If you want to go step further with privacy than Mullvad browser is also good and they work with Tor project.
I have been using chrome for daily drive my entire life. Not sure whether I should switch to Firefox or not! Tried to run a script through tampermonkey, but it didn't work for some reasons. Recently saw a message saying, "this extension may not be supported" something similar!
Btw, have you tried Bromite? forked version of chrome? I am pretty confused with which version should i choose.
Couldn't find a Android version of librewolf! Only desktop supported?