I have a swirl of thoughts that I've trying to organize.
1. Evil has to do with motive and intent. Many "bad" things happen that are not evil. Similarly, we can do many things with "bad" consequences without evil intent.
2. Evil intent is that which is contrary to the love command--when we act intentionally to harm others or do not act to help when we easily could have.
3. Loving God is a difficult category to clarify, because here we are prone to smuggle in a lot of do's and don'ts that work contrary to love of neighbor or are context-specific. So the command to love God principally manifests itself in our love of others. However, there is also an element of "self-displacement" involved in loving God. There are patterns of behavior that do not strictly harm others but which are self-oriented in a way that is not virtuous.
4. "Bad" has more than anything to do with consequences, not least causing human pain. We can broaden such pain to causing the creation pain. However, this is a tricky thing to spell out. Pain can serve a good purpose. It can teach us to avoid certain things. Death is not evil but natural. Humanity as a species currently has a generally harmful effect on the planet. But since we are a part of nature, is it natural?
some thoughts trying to get my juices flowing...