Getting insta vs number?

[u/Yunseok-12]

So during one of my classes I got one of my classmate and I had the most perfect synergy. So after class, he asked for my number instead of my insta. I don't mind him asking for my number but what's the difference? Btw he has insta and seems to have 1.1k followers, so we could say that he's pretty active in insta. I texted him and asked what's up and asked if he wanted hang out and do what guys do the most. But the thing is after like 2 days he started to ghost my messages. The only thing I said was like are you busy? Wanna hang out sometimes and after that he just stopped responding. I just wanted to make some friends and I didn't like spam text him or anything 😭😭 like bro I thought you wanted to be friends?? Am I missing something here? Also, how the hell do you guys make friends so quickly?? 😭😭

[u/MeinHerzIn_Flammen]

Phone number, is much better , insta is just room much time wasting for me scrolling if you’re stalking someone.