The main thing with free sports streaming is that they are not maintained by pirate enthusiasts. It’s sponsored by non licensed betting operators which can’t make legal advertizing. This exactly means that any kind of banning of websites or pirate broadcasts would have no effect; siteops would add new unbanned domain to existing infrastructure and would continue their operation. You should say thanks to addictive gamblers for your free sports streaming!
vk.com has the best music streaming library, if you need underground stuff. You’ll need to register there and browser with adblock feature (i’m using Vivaldi) if you don’t want to listen to audio commercials in Russian language.