Look you are only lvl 43 with ninjas i like to call Hinata friends or the age of kid Naruto.Here is the truth:

-The cap for this game lvl85
-The ninja you chose works only when you have good ninjas to work with
-Your ninjas, some have them have not reached the 3 star version
-you have not gained access to summons
-you have not gained access to the later treasures

Essentially I am telling you to * with your current team or just * with team seven or a mixture of their friends.
You c*so work on getting the frags of your ninjas so you can 3 star them. Now you do not have to stay like this forever, just until your eyes open up to better ninjas and better versions of your ninjas.