Libredirect doesn’t check and update working instances, if I recall correctly with libredirect you have to manually add instances to the list and can only ping the provided ones manually

There’s a few userscripts on greasyfork for it as well

You can also use farside on browsers that don’t support userscripts just by modifying a url

It has been particularly useful for browsing reddit pages without actually going to reddit because I’m not going to give spez my data and libreddit instances sometimes max out on requests so I just have to close and open tabs until I have a working instance