I've been in a similar situation to you this season, bouncing between gold 3 and 4. Just can't seem to get wins going once I get promoted. It's possible that it's bad luck, but I think it's also psychological. You know you belong in at least Bronze 1 - you've already made it, many times. So getting back is (relatively) easy. You've been there and done that.
But once you're there, you NEED to win to avoid demotion. At least for me, those first few games after promotion are actually MORE stressful! I'm trying so hard to prove myself, to prove that I belong. And that makes me play worse - maybe it's the same for you?
My suggestion is to not think of it in wins/losses, but in knowledge gained. Even when you lose, you're gaining experience, and that makes you better. And soon, you're going to surpass the people you're getting matched up with, and you'll start winning more than you lose, and climbing up. If you're bouncing around those divisions now, then you're probably right on the cusp.
So keep at it, keep learning, and keep your head up. I bet you'll jump it sooner than you expect. =)
GL HF!