Depends on your definition of evil
I would never harm or wrong good people in any way. But my definition of "good" may be a lot different than someone elses.
If I see someone liter, I'll break both of their kneecaps and arms. If I see someone abuse an animal, I'll kill them. Low class trashy people, I'd make infertile so they can't have children. Rapists and murderers I'd kill. Etc.
Anyone that talks or is distracting during a movie at a theater I wouldn't just kill but would slowly torture.
if someone tailgates I would destroy their vehicle and make them watch. same thing for someone slowpoking the passing lane.
I would basically use somewhat extreme measures to seriously cull the population. The earth and human race would benefit. I would rule with an absolute iron fist. But I think more people would love me and appreciate me than hate me.