It sounds like you know you have some progress to make, which is honestly a huge step. Speaking from my own experience, you might benefit from taking a while (a year or even more) away from dating, and instead focusing on your thinking patterns, which ones are unhealthy, and how you can retrain your brain to have healthier ones. For instance, if some things are quick to trigger jealousy in you, work on immediately identifying that and processing that feeling quickly, channeling it into something more actionable. In time, your initial response to those triggers won’t be as strong. This is a big part of how I approach personal growth, and after a relationship that kind of crashed and burned, I spent 3 years heavily focusing on this, and my relationships since have been so much more stable.

I wish you the best!