What even is confidence, what are people confident about?

Im only confident playing video games and doing my job as I know im good at it. But in general as a person in life I have nothing to be confident about. I know people dont like me or want me around I can't make friends or attract and flirt. I get bullied and laughed at even several times was recorded by strangers while they were laughing at me. So when it comes to important things in life Im bottom of the barrel filth of the earth but things that mean nothing like being good at videos Im capable

What even is confidence, what are people confident about?
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