Where to find the right ones?

I've run into a social conundrum again, so I will turn to the anonymous masses of reddit to guide me in my important life decisions.

Situation: I am a 25M who has difficulty keeping girls around for a real relationship.

Clarification, I don't have trouble sleeping with girls I find attractive. However, I genuinely don't want to be a fuck boy and it's never been my option to leave someone after I've slept with them. When they do leave, I'm straight up that I would like to see them again but I never try to "fight" for them to stay.

I must be doing something wrong but I'm not sure. I setup dates, have fun with the girls and when I do sleep with them I focus heavily on making sure they enjoy sex (I'm actually very confident in the bedroom). Additionally, I only text them to setup dates, I'm never pushy and I don't try to define the relationship (though I am up front on the first date that I'm not looking for a fwb or hookup).

I have a good job, I'm financially stable, I don't brag to the women, in fact I mostly just listen on dates. Additionally, there are certain things they think that I'll compliment if I like their perspective.

TLDR: Have no problem hooking up with women I find attractive but can't seem to keep them coming back. Not sure what I'm doing wrong.