After having faced so much pain himself, Nagato became convinced not everyone can understand it.

Source: https://gamerant.com/naruto-most-gut-wrenching-quotes/

During his time serving as the leader of the Akatsuki as Pain, Nagato only used the statue to seal the power of a tailed beast.

Source: https://www.cbr.com/naruto-gedo-statue-explained/

Each health center knows better than anyone else what will have the most impact, said foundation spokesman Matthew Nagato.

Source: https://www.civilbeat.org/2023/05/new-15-million-grant-seeks-to-address-root-causes-of-health-disparities-in-hawaii/

In the face of this, it is worth noting that Nagato, both as Pain and in his youth, was unable to draw on the full power of the Rinnegan as he was not the one who originally awakened it.

Source: https://gamerant.com/naruto-chibaku-tensei-explained/

The Soul Dragon technique used by Nagato was so overpowered that it could end any fight in seconds, meaning it was only seen once in Naruto.

Source: https://screenrant.com/narutos-most-powerful-jutsu-nagato-soul-dragon-used-once/