No, the tendency towards complexity is actually only temporary, until entropy brings it back to simplicity. Every organized (i.e. complex) physical process also generates randomness in the form of heat loss. It's like how although your air conditioner may make it cooler in one small space (e.g. your house), it actually generates more heat overall, speeding up entropy.

The real definition of good and evil is actually even simpler than your suggestion, and more intuitive: Good is simply good feelings, like happiness and pleasure, and evil is bad feelings, like pain and misery.

The only reason humans even ask the question of what is good or evil is because of their first hand experience with feeling good or feeling bad. Feeling good and feeling bad (i.e. the spectrum of well-being) is the only thing that has an inherent meaning, and the only reason why we have any intuition or desire for the universe to have any meaning.

It's very obvious if you think about it. It's the one truth that every human knows before any other - that some things feel good, and some things feel bad, and that things that feel good are good, and things that feel bad are bad.