I don't know why I even bother
The individual norms and capabilities are you having a typical explsion in strength as someone new to lifting (and young) and now it having slowed down as you come closer and closer to your genetic potential. I guess maybe you feel that you've done something extraordinary but when you start celebrating putting 5 pounds on a max lift you'll probably be able to put things in perspective.
There are guys that weigh ten pounds less than you that can lift almost twice as much. That's above average, my friend. Consider a guy deadlifting around 790 at 165 pounds. Yep.
I hope I'm not coming off as an asshole. It just seems like you need a dose of reality, bro.