Overlord2

my class is warriors and carry Dualsword (R-grade)

I am level 99 in the game and I think there is something wrong because I think it is a high level, however, MP level is weak and HP level is less than 20000, I really cannot kill any monster in the war-torn plains, how can I solve this problem, I see many players have no problems killing many monsters at once I run normally with the game, so why should I face these problems?

I am new, it is the first time I run the game and when I want to create a character a message appears that I cannot create a character until I delete the existing character and I do not have any characters