Need help with berserker.

I don't understand how to play this class.

It says it's a "harasser" but all of it's moves are aggressive.

I try to go aggressive and mix in feints but i usually dont trade effectively and find myself constantly waiting for stamina

I try to play defensively and do little pokes but i usually get out pressured and doing the side spin attacks almost always get parried

Dance of the pared blades is awful you either have to feint your stam bar away to land a hit or you get parried.

I am sure some of this is L2P but the fact is i can pick up any other character and do the same or more damage with half the effort.

How do you play this guy.