currently i'm stagnated at 90kg deadlift. I'm going twice the week to the gym.
My main issue is that the grip is difficult and shortly after that i'm not able to hold the bar.
I'm wearing gloves because after at some point the hand inside skin got so open that on the next train it began to hurt, so that I'm not able to do the workout clean.
Should i focus to do some training for the hand or try it without gloves so that the hands get trained?
Easiest solution would be to work on your grip, you could use those hand grip tools that you squeeze. I personally don't like lifting in gloves, I feel like the bar slips more, especially when my hands get sweaty, you could try to use chalk and see if there's a difference.
In the past I also had trouble gripping, but it was due to a tightness in my shoulder, a nerve was getting pinched, so I couldn't hold a tight grip too long. If all else fails I'd suggest going to a physiotherapist to see if there aren't any issues in your arm.
In any case good luck, keep it up!