Dating apps

I’m on dating app( hinge ) 2 months. I often run on the same issue. Preview : I’m 29 y.o with a child, Eastern European originally, living in Texas. I have never dated American guy. So not familiar how they are in dating culture. On app i would get quite a lot of matches. And the issue is that every time i would match, talk in app with very nice guy, he would compliment me and be very involved in conversation, text first mostly, make plans for a dinner date (sometimes that last weeks). Seemingly very interested person but suddenly our chat would get disappeared. It’s hurting me , because why would man there be fake nice and then disappear. Just don’t pretend if you not interested. I never bother yo answer someone who I matched but I’m not interested to talk basic “hi, how are you”. So I’m more involved with those who put more effort and then they would delete me . It’s always Americans white boys 31-39 years old. Younger and older man are more persistent but they are out of my age range. I really just trying to find someone for relationship. Is that a cultural difference or what ?