When you realize you know nothing and are pretty much bad at everything, are you at the high point or the low point of the Dunning-Kruger effect? Asking for a friend.
Ohferpetessake...stop with the pity party for yourself, go out and volunteer for something, take a shut in to lunch, just Move It!
No one knows nothing and there isn't a single person in the world who knows everything about everything.
You typed your post, so you know English languish.
Sounds more like you're in a depression.