Totally get that, it took me a while to wrap my brain around GM-less! I’m planning to record a play-through of Space Bounty Blues this week, but in the meantime you could check out this series on GM-less games: https://gameswithoutmaster.blogspot.com/
Fiasco is probably the best one to watch played—it somewhat fits SBB tonally and structurally, and there are some really entertaining sessions on YouTube!