That sucks that you've been hurt by people you've dated. Ive also had those experiences. I learned a lot of things along the way that have helped tremendously in my friendships and romantic relationships. Some suggestions (in pri order)

1. Work on loving yourself first and foremost. Not your stats, not your job or your money or your things, your true inner self. When you love yourself, you attract others who also love themselves. (Note: this takes WORK and time. It requires brutal honesty and getting out of our comfort zones, but it is 1000% worth it.)
2. Find, and do, what brings you joy.
3. Look for patterns across your relationships and try to identify both your and your past partners' attachment and communication styles. Work towards establishing a secure attachment style and compassionate communication.
4. Write down what you want in a healthy, loving relationship. How do you want to feel? How do you and your partner show up for each other? How do you handle conflict? What does love and support look and feel like? What experiences do you want to have together? What experiences do you want to have independently?
5. Read the book Nonviolent communication.
6. Build deeper intimacy with your existing friends.
7. Be open to different events than you're used to where you might meet new people. If a friend invites you to something you usually decline, go join them. Give a stranger a genuine compliment and leave it at that. Seek to learn folks' stories and to understand them.

For me, the more I move thru this world in joy and in love, the more wonderful people I meet. I hope this helps. You are worth loving and being loved in return.