Seconding these choices. Of note in the second link, TTV LOL PRO is pretty great. It has worked when every other ad-blocking attempt is (temporarily) quashed. It requires manual updating, but considering you’ll know when to update because ads are getting through, it’s not a hassle.
https://github.com/younesaassila/ttv-lol-pro
Edit: Nevermind, there’s an extension hosted through mozilla now, so it auto-updates. Get that instead.
https://addons.mozilla.org/en-US/firefox/addon/ttv-lol-pro/
If you assume they’re from countries with weaker economies. Meanwhile, I live in the US, and I survive under the poverty line. Nothing about the US is ‘region-locked’, I’m just treated like shit for being disabled. It’s a lack of income first and foremost.