@Jasper10,
Let me give you a minimal viable product of "Good"
Good is what exists in 4D spacetime. Good is what is factual!
This definition of Good is justified in the idea of Cosmic Order!
By Cosmic order one is specifically pointing to the ONE 4D space whole Reality with all domains of operations!
Why is Order equated with Good one wonders? Because there is
no alternative to the whole of Reality, that which is is thus fore right as it fits a place in the Ecosystem, the problem doesn't go away with a Multiverse either as the same logic applies, again Good is the FINAL ORDER of all things and their place in "spacetime".
In Sum, and you are hearing it here first,
Good is ABSOLUTE while "Evil" is circumstantial or phenomenological, as the perception of "Evil" steams from epistemic ambiguity/uncertainty/ignorance about how future states of affairs are justified or how past and present states of affairs are excessively complex to make sense of as they transcend our domain of computation.
In this light "Evil" is an illusion, although it might be argued that in order for life to have meaning this illusion of inconformity in conscious beings is necessary for the will to action that every living being necessitates.
"Good" is thus the NECESSARY ORDER of a string of Information describing all phenomena. In modern parlance Physicists call it the Universal Wave Function.