Yeah, some content are gated behind some group content. There is no way to do trials and (alliance) raids solo before reaching somewhere between lvl 70 and 80 (for the one you want to do). Yet it's not abandonned. People do still run it, because of the roulettes. But yeah, right now, the game kinda is in one of its less active period, and it makes some content harder to do. Not sure if it's usefull on NA server, but you could activate all the language in Duty Finder option. I know it works on European servers, it makes the queue shrink, by searching to queue with people having any language, not only the ones with the same as you.

Another solution would be to ask someone in the NN to unsync it with you, a lvl 90 can run the thing in around a min solo. Downside is that you would miss the fight, but would be able to continue the story.