No one actually understands

It feels so lonely that no one actually understands having social anxiety. I tried to explain it my parents, and siblings and all they say yeah its normal to feel nervous. Its not nervous, its much more. The feeling never goes. No one understands how horrible you always feel, how you're always afraid, how lonely it is knowing that you'd probably live most of your life alone. No ones knows how bad you want to go out and have friends but you can't, no one knows how bad you feel thinking you're the rudest person ever just because you physically freeze out. Its not nervousness or shyness or introversion, it's something you'll never understand.