I can't feel attracted to anyone after my last relationship ended

I'm 17 years old and I've had two relationships. In the first relationship, I humiliated myself a lot in front of the woman who was 15 years old, but in the end she broke up with me saying she was confused, but I managed to get over it quickly because I found a prettier and more valuable woman a week after breaking up, she was the woman I had my second relationship with.

In the second relationship she also broke up with me, saying she didn't believe it would work out in the future, she was going to college, our parents didn't accept it and school would need all of her energy.

We dated for 7 months and that happened on January 7th of this year, and I still wonder why it didn't work out.

I've tried to have relationships with other women but I don't feel the same way as before. Honestly, I believe it's because I haven't found a woman who is more attractive than her, even though I know my ex didn't offer me anything other than beauty.

I'm trying to take better care of myself and expand my social circle, but when I stop to think about what happened, I feel sad.