Ladies’ what is your advice about approaches from a guy to a girl? Before becoming friends?

Assume you just met a guy, and that you became friends and you are interested of him.

What approach is for a man to lady’s before sharing number to a man?

I understand , numbers are for family and friends. I only say it because, I don’t want loose opportunity me as man, if a girl were interested in me.

How can I show her, I like be in touch with and not just talks or just a wave?

Any response to this question, reply your answer via text message that you girls have. I’ve really tried talking this to a therapy but they, are not help me at all. Not only, that it is a waste of time for me. Therapy isn’t providing me an advice for me to ask them.