For me personally, answering what evil is is more difficult than answering what good is. Because evil is far more insidious; unlike good, it's capable of disguising itself. I've encountered people who pretended to be my friends and betrayed me as soon as I was no longer useful to them. From a young age, I was extremely naive and trusted these people, almost like brothers. So, evil is a murderer disguised as a monk. In our time, it's the most common type.
For me personally, answering what evil is is more difficult than answering what good is. Because evil is far more insidious; unlike good, it's capable of disguising itself. I've encountered people who pretended to be my friends and betrayed me as soon as I was no longer useful to them. From a young age, I was extremely naive and trusted these people, almost like brothers. So, evil is a murderer disguised as a monk. In our time, it's the most common type.