The concept of "true karma" or "reality" is based on the idea that our intentions, thoughts, words, and actions are interconnected and impact the world around us.
Buddha taught that every lifeform has the potential to choose between the "blind gate" or the "awakened gate" in each moment and that true wisdom begins with observing the self without attachment to the ego.
Through practices such as the Heart Sutra, one can develop a deeper understanding of causation and free will and eventually purify one's karma to become a Buddha and help others.
Some systems that can aid in this practice include the Hell Bodhisattva system
and the Amitabha Buddha Pure Land System.