The psychology behind people who insult

Is it low self esteem?

I'm thinking that's the case.

By putting someone else down (with lies) they feel elevated for a little bit…all the while having no profile picture, no physical talent , etc
540 pound deadlift

100 pound DB shoulder pressesx10\
225x28 barbell bench
405x10 deadlift
405 bench press

Leader-NOT a follower ..i am my own crew
warrior archetype
Gladiator school graduate
Carl Jung protege

Self taught and fluent in Spanish