Okay friend I am not sure of your build so I will post some very general information. Wear armor near the Kettle helm, Druzina mail shirt, Mail gloves, Rus Cavalry boots. You should be under 20k total gear cost with a medium weapon. You will make money quickly not be one shot (most of the time), and the lighter armor will force you to become better at blocking/ footwork. The two most important things in this game for every class.
Some people will be unbeatable to you, accept it and move on. Do not try to fight them fair, run away, attack from behind them, and/or throw stones at them while team mates swarm them. Anything you can do to get an advantage is recommended. When I see a player I always look to see if there are teammates to hide behind or to distract before I move in.
This game is hard but if you stick it out it is VERY rewarding. Good luck to you. Remember everyone has been a peasant many times too. We suffered and moved on, and if you can do it so will you.