At first, I implemented the uBlock Origin method, recommended by @salarua@sopuli.xyz, and it seemed to work at first.
Today, I got another Anti-Ad blocker message and decided to try the method described by @Peekystar@kbin.social and, again, this seemed to work at first.
Later today, neither of these methods work when trying to use YouTube itself. The redirect methods, probably, work fine if you are NOT using YouTube itself.
Please pardon the n00b question: I've installed the libredirect extension in my LibreWolf browser, and have installed the Freetuube app for Windows, but I'm still lost on how to get libredirect to point YT to Freetube?