I think no one will like me ever

I am 19M and I have been rejected twice. I know people will think that I will get many chances again in my life . But the point is I don't feel attracted to too many girls. I only do when I truly find her genuine, fun and in my own sense beautiful. Now whenever I feel like opening up to some girl I like , I just think that I am going to get rejected anyway so why bother. I know I am not good with words But I want to try and change this about myself. Any word of advice.