Help pick a main?
You might consider posting in the ‘Players Helping Players’ sub-forum.
Good luck.
TL;DR on this is: it depends way too much on you for anyone else to tell you what to play.
I can tell you that every class in GW2 is absolutely, positively capable of completing all content in the game, including getting into the highest tiers of PvP, completing raids, fractal 100, etc.
It sounds like you are focusing more on the “meta” builds, which are the “theoretically optimal” builds — which means approximately nothing compared to player skill for almost all the content.
It is only if you are fighting for the #1 place in PvP, or trying to do a five-person raid clear in record time, that you have to play one of those. In most cases, too, switching to the “meta” build from something you know well will reduce your overall effectiveness.
In this game, as most others, player skill is much more significant than gear or build in getting things done.
So … play what you like.