So I am new to this whole seduction thing so sorry if something is wrong.

So yesterday me and my friends and we had an argument about how should you text a women you are interested in instagram.

What they said: You should say "Hi" to her, and talk about some shit for some time(days/a week), then ask her out.

What I said: You should text her "Hey, Whats up?", then talk with her about some shit that dose not really matter and immediately after that, at the same day ask here something like "Hey, give me your number, so we will talk and hang out sometime"

Which approach do you guys think is better, just asking out of curiosity and to learn from it, since I prefer face to face comunication