For paywalls, outline.com sometimes works, and you don’t need to install anything. I’m not so sure I would trust plugins like these without reviewing the code. But outline.com runs on outline’s server, not your computer.
The code is all readable on the page. No tricks.
I’ve had a lot of success with the Bypass Paywalls addon. Also uBlock Origin with Nano Defender does a nice job of stopping those, “We see you’re using an ad blocker. Please disable your ad blocker to view this page” messages.