So first of all i recommend you get a new weapom, 77ee works out at about the same damage as a level 30 weapon
can learn a bit more here:
https://forums.d2jsp.org/topic.php?t=82816922&f=74secondly, to get more damage for a barbarian, you should use a strength charm, as all 3 standard weapons for barb a strength charm works decently for. Avoid statting dexterity, as strength is just simply better in your case.
Your armor is great and it appears you've mostly statted vitality which is a decent option
Using an EE charm means that casting does more damage, which is pretty much useless for a barb. This is what mages use for damage.