bit of everything really
needy (too many messages)
wrong frame ('i wish you would like me')
bad timing (asking for a number when she isn't invested)
next time, if you are unsure which stage you're at with her, throw in a qualifying question, for example that relates to a previous discussion or something in per profile or pics or something.
If she has a pic of her cooking some food or something, say something like:
" you seem like a good cook, if i was there with you right now, what would you cook me that would really impress me? :p "
You then gauge her response, if she starts listing a bunch of stuff, that means she is invested then you're good to get a phone number.
A smooth way to go for the phone number:
'bla bla you seem cool so far, would you be up for a drink with each other? my tinder keeps crashing, do you have a number?
"If she responds with a one word reply to your question, then you needs more work, don't bother asking the number just yet, try to hit the sweet spot and get her invested (gives you detailed thought through answers and questions and genuinely wants to get to know you)