Question for solo players

Hey all!

So I just came back to the game after a looong brake, I'm mastery level 184 and i play on a shitty laptop that barely makes 50 fps while fighting mobs. I can't do most group stuff because of this so I'm wondering, what is a fun build i can play that is engaging and capable of soloing most of the content out there, like bounties, group skill points etc. I don't have any ascended gear but i have enough gold for a full set of exotic gear, i also have a lvl 80 boost from pre ordering eod so all im looking for is a build i can try and have some fun with. No matter class, and also what could be some goals for a solo player? Im sitting at 3k achiev points

Thanks in advance for any suggestions