You have 2 supports, 1 tank and 1 barrier ninja, it's normal that you feel that your damage is absent.

Unfortunately you have bought the wrong ninja, since that hinata isn't really viable unless you can proc her 30 combo chase each turn. We don't have her sister yet, who can help her really much.

If i were you, i would go on something like guy, iruka, sasuke/sailor sakura untill you get better ninjas.