I only ever managed to play through the first one. The online community for GTA Online is fucking awful, it was incredibly rare for me to get three people for a game, and when I did one or more of them ended up sucking. I got to the end of the prison heist mission, dude crashes his helicopter and gets us a game over, everybody quits. Nobody ever wants to do organized events, they just wanna dick around in the open world.
Yea, you pretty much have to be in a decent crew to get heists done. I would say join mine but I think you're on XBox.