Yeah, it can be hard to find a group for that these days! In KOTFE, they're actually going to make a solo mode for the most important story flashpoints, including this and The False Emperor.
Usually if I can't find a guildy to run me through or a group to do it, I'd just do Makeb first and when I'm 55 with Rishi gear, just solo it. It might put a dink in your immersion, but it's probably your best bet.