Rinnegan Battle: The Gentle path vs The Yin-Yang Path

Terrax who after another failed attempt of learning the Rinnegan took a  long pause from training to walk and clear his head. While passing the ruins of Tamashīgakure of which he knew nothing about he passes not even looking around.

All the abilites Ive gained I have mastered the Yin properties, the Yang Properties, even both Combined.. Ive mastered the Preta Path even learned the Outer Path abilities.. but yet I cant learn a single other path

Whats wrong with me Have I reached my limit.. I dont have a limit.... I can do this... What is the problemm

ARGGGHHH I usually dont get this upset but this is pissing me off. Terax growled as he kept walking as his chakra flared up as well as his temper