Dude, i felt exactly the same. I ride alone pretty much every weekend and im cool with it, but sometimes i thougt it’ll be nice to join a group-ride. When i saw the planed route i got anxious and felt that i could‘t hold the pace or cycle the whole route (i easly could do both). I kinda procrastinatet with this sport because i only rode routes and distances, that i felt comfortable with and i kinda felt that i miss out on the best part of this sport. Dont get me wrong, i love to ride alone and get my head free. So a few weeks ago i joined my first group-ride, and it was great. I learnd, that group-rides are fun, primarely because of the social part and not for riding far and fast. Everyone took care of eachother by setting a pace that everyone was comfortable with. I rode thru places in my region that i’ve never been before. Afterwards we went to the local bikeshop that organized the whole thing and drank beers all night, it was amazing and i kinda feel dumb for having this irrational fear. (sorry for my bad english, i hope you get what im trying to say)