Way back when I used Bumble, a lot of girls used to drop 'Hi!'(double standards), and never bothered to reply to my reply which felt very annoying to say the least.
I would wish every dating app to add a simple feature, if the other person is active on the dating app and isn't responding to you, just unmatch the pair say after two/three days of the last message. I don't understand what's the purpose of just being a name/chat on someone's list.