I 17m want to start practicing for the very first time in a few days but i have a few questions before i really go out there!

First, what should I be going after when approaching? Should i go with the goal to get her contact info, or should i just worry about practicing and getting experience with no expectations as a result. Second, how often does cold approach lead to getting dates and keeping contact semi long term (say a couple months to a year)? I suppose this one really depends on the person you come across and its also a numbers game.

What do i want out of this practice? I want to get close to a few girls, one whom i can potentially escalate things with. Otherwise, im looking for experience and what i should do differently next time, and lastly to test my limits. Thanks for any coment