go talk to them first :D just drop them a little message, nothing fancy, just say hey and they’ll reply and if they’re interested they’ll say something other than just a ‘hi’ back and you can get a convo started :D
if people see you talking with someone, they’ll be more likely to talk to you, because your followers might be assuming you don’t /like/ talking to people (for anything other than request/compliment purposes) or something haha.