New to OLD, advice?

I’ve been on OLD for a few months taking a break here and there. I match, we chat, exchange numbers, text for a few days. This is when I try to get a phone call or a simple meetup. When I do meetup I can tell within a few minutes if this is for me or not. My question is the ones I can’t get on the phone, or if I do, can’t get to a meetup or first date. What am I doing wrong? Also, since I’m asking questions, what’s your opening line/question?