They don’t feel the spark

I (24F) have started getting back to dating this year. I have dated 2 guys that I met online and they finished things with me for the same reason: they don’t feel the spark with me. I know that these kind of things come with dating by man, can I experience how is it being loved for once? Hearing that from a guy you like is really hurting, more if you considered things were going well between you two. This has ended up on me noticing insecurities that I didn’t know I have such as fear of never experiencing what to be in a relationship is. As I am seeing this, maybe I come from a place of desperation without noticing it (most of my friends are in relationships so it might be triggering me), and I’m considering not getting back to dating after have work on those things. Also I feel like dating apps are so draining, but nowadays it’s really difficult for me to find someone I like organically (even though I’d like that).