Improve yourself to be a better man. You have so many breakups that by now you should be able to learn from all of them. If you want to find the one, write down what you are looking for. Put some specific criteria so that you know which girl will suit your lifestyle and taste. Dont settle for less. Put it in another way, dont blame yourself for all the breakups. It involves both parties so the girls are at fault as well.

Be confident and dont be desperate. Hopefully you get to know many girl friends so that you can pick which one is right for you.

So its only two relationships. Its not a lot but you definitely can learn from them. You cant blame yourself if the girl does not want to fight for the relationship. Have you ever asked them what is lacking in you. In any case girls nowadays tend to give up very easily when they do not find someone perfect or close to it. The days of ladies willing to endure it all for lasting relationship is gone.

You sound really desperate from your reply. Actually there are many girls in their 30s who are single. And no they are not rejected goods as what everyone is thinking here. They are more independent and know what they are looking for. If you are in your 30s, I recommend you to date this ladies. You will know your self worth. At the very least, you can ask them to tell you what you are really lacking.