My group is about to start a new campaign of Pathfinder 2nd edition. We're still in the middle of deciding a central theme to the campaign, but the central focus will be the goals of the player characters. This won't be a campaign where your backstory comes up sometimes - it will determine where your adventures take you. It's not a problem if you don't know Pathfinder! We all come from a D&D background, and we'd be happy to help you learn the system.