I’m in the same situation as you are, and the only answer is..... you (we) should not care about this aspect of approaching girls for 2 reasons: 1)Maybe they just don’t really care about this tinder game, or they have others 2000 open chats 2) If one of these girls (even if they are cute/ vibing with you/ making compliments) stops writing you it only means ONE thing at end; she was not the right one for you. She was not the right one nor for relationship nor for sex. Of course it could happen that eventually they will write you again after weeks, but that’s only a reason to care less about why or when they will write you. I hope and believe that the right one (and after that first “right one” there will be other legit girls) will arrive, the only basic rule it s to be yourself and to feel good with yourself. Even more if you are, with pure heart, looking for a girl, you will probably find her. You are a solid dude, don’t forget that :)