I watched a couple episodes of Sonic Boom and Sonic X, watched both of the recent Sonic movies of course, watched GTLive play The Murder of Sonic the Hedgehog (Though it looks like it's free so I might play that later as an enjoyer of all things mystery and detectives), and I myself have played Sonic Colors, also does the Mario and Sonic at the Olympic Games Tokyo 2020 demo count
Yeah basically I don't know the lore of the original series I just like fast blue hedgehog and friends wreak havoc or something