Been running GOS for a couple years now, it's flawless, I've installed it on my wife's phone as well, she has no issues with it either, so really no need to be a hardcore nerd to run it, just follow the instructions and reach out to the appropriate community/forum if need be.
Side note, I used to run Lineage, GOS is a breeze to install and run compared to Lineage (which was great, don't get me wrong, shout out to the devs!).
Same here, here's q tip beside addblocks, if you're still watching yt content, use PipePipe for android based phone, and Smartube TV for android TV. There will be no adds, and the apps skip sponsored segment automatically.