I promise you though that (before TOA release at least) getting 2 or 3 friends together and learning TOB as a group is some of the most fun you can have in OSRS
If it were only that easy for everyone :p If you dont have any friends who play osrs then TOB can be super inaccessible. At least with COX and TOA, you can go in solo and learn.
Make friends who play OSRS! It's an MMO, find a chill clan, ask some people in a Twitch chat or a random Discord, try We Do Raids, ask on the subreddit!
Perhaps sometimes easier said than done, but I've made so many lifelong friends in this community well-before I started at Jagex by just getting stuck in and putting myself out there.
Maybe a controversial take, I wish there were more group-only content. Feels like a little bit of what makes MMOs so special (to me, at least) gets lost in the mix from time-to-time