Which marketing approaches have yielded the most referrals for you?

Just finished school a few months ago, working my first private practice. It’s fine, but of course a little slow. There are so many marketing and networking tips told to us, but I wanna know which one has ACTUALLY brought in the most referrals for you guys. Because I have done a bit of networking, but it feels like regardless people are still going to generally refer to the people they’ve known before they met me, I mean why wouldn’t they? So far I’ve gotten all my referrals from my job, but I’m wanting to get at least SOME outside of them. I’m on Psychology Today, and have incorporated all the tips and tricks I’ve read, like niching down to the populations I’d most like to serve, updating different things every now and then, a video, etc, but I’m almost positive me being a new therapist keeps anyone from contacting me. What works best?