Hello guys, i am 17 years old male and i want to improve my dating life and get better at it, i see some people do it with cold approach, some social circle etc etc... and i am curious,

İ graduated from highschool but i never had a girlfriend or hooked up, i did cold approaches on my vacation to be more chill about talking with girls, i did good by approaching i guess

How did u get better? How would you suggest? is it late for me? How important looks are?