How many rejections are there too many? Is something wrong with me?

So far, my dating life is just low. I can get a first date but can't get a second date. I had tried 5 different girls, and 3 of them I got first dates. I was really wondering if I am the problem. I wanted to be the best for her, but they said it not going to work. I don't know me or is the girls whom I am choosing. I feel I don't belong with anyone or I am not good enough. If so there a point I telling myself why try if you just suck and just a loser. I don't know why or just bad luck. Don't know what to do. I just feel like I just empty man or pathetic person who is seeking to high of a gold. I am trying every and see no reason to try getting married. I am really thinking I horrible person and that what they see and I can't see it.
How many rejections are there too many? Is something wrong with me?
Post Opinion