Problem with my ?

Okay i just turned 19 last month. I have never had a girlfriend because I worry that i cannot satisfy any female. I've read numerous times that length doesnt matter but its the girth thats IMPORTANT. So that must mean an above average girth is preferred by most women. This really discourages me from trying to talk to any women and establish a relationship. Now here are my measurements. Length=5.75"-6"(on a good day) and Girth is slightly over 4" when the lowest average is 4.5". So do I still need time to grow or am i doomed to be lonely and die a virgin loser. Like i mentioned I've seen all over the internet that girth is in fact important so it make me skeptical and cynical towards women. I even contemplate suicide because of this. Please help