Not that I pick the best music, but just throwing the resource out there in case others haven't seen it yet
https://freemusicarchive.org <-- is a good place to peruse more royalty free stuff by genre, only downside I find with the site is I don't know a way to search by track length which would be very helpful for matching with video length. Usually I just listen to some tracks in a given genre find an artist I don't hate and then check out their album/track listing to see if any match up close enough to my video time. Unfortunately they were down last time I was editing and the file I got was flagged as someones content... not a huge deal they just took monetization rights but I don't have enough viewership for that to matter anyway (they might be bombing people with ads, but that's about the only negative). Depends on what kind of flag the copyright holders raise though and most of it is automated by bots from what I understand.