Dont take this the wrong way - cos I am not taking the piss.
Some people are happy spending all their bass career playing on their own, extreme bending, slapping like a c*** stuck in the '80's, two handed tapping, double thumbing, whatever. There will come a point, if you are a musician, when you want to stop w***ing and play with other musicians in front of an audience. If you dont have the time, commitment, whatever in a non judgemental way, to get a gig with a band, then look for venues that do open nights.
There will be one within driving, bus, train whatever. Go along and watch (they tend to be a bit jazzy), suss out the craik, go home and learn what you need to learn until you are happy to turn up with your bass and fill your boots.
Thats it.