Hi @carlad, I haven't worked as a freelancer myself, but I do know a lot of people who do. A suggestion I could offer it to try and connect with more freelance UXers yourself. Meetups are my personal recommendation for how to do that. Try to just be open and talkative and genuine, but also let them know that you are open to freelance work.
Some freelancers operate on their own, but often they will be offered projects that require more than one UXer and then you may get a great chance to work with someone more experienced, or perhaps they won't actually have availability and the clients will ask them if they know any other UXers that are available! So building a good network might mean you get leads from other UXers.
And of course it always great to meet people and build your network for other reasons too, e.g. for fun