I'm insecure, is it normal

I’m sixteen (turning seventeen in a few days), and lately I’ve been feeling really insecure. Most of these insecurities come from my looks, and they hit me in waves every so often.
Even though girls show some interest in me, it doesn’t help much. I keep seeing videos of people around my age who look so much better than I do, and it only makes the insecurity worse.
I feel like this insecurity is holding me back. I’ve really been wanting to talk to a girl, but I’m convinced she wouldn’t be attracted to me. Not to mention, I have no game whatsoever.
I’m just not sure what to do. I’ve heard that this is normal for teens, and I’m wondering whether it will go away on its own or if it’s something I have to work on personally.