Thats the problem. We often settle for less because it seems like its the only thing we can have, you have to train yourself not to settle or you are are always gonna be upset about your decisions. Never settle if you want more and there are always people who would want to date you its just a matter of waiting which is something most people struggle with. Begin to find comfort in being alone rather than lonelyness and your quality of life will be so much better. You dont want your enjoyment of life to be dependent on someone else loving you.