Onysfx

The person who tried to beat others but failed at it.

2nd place

The word "loser" the way you mean it has no descriptive content, i.e. when someone uses it, they don't express any matters of fact about a person; what they do express is an emotional attitude, namely one of dislike. It's aking to saying "bleh" or "ugh" or "asshole" and means about as much as "I dislike you".