It takes work. It takes skills. We can all learn, but most quit because it's not easy.
Well good. Let them quit. This means there's more buyers for those of us who do sell stuff online.
Again, I don't mean to seem down or harsh; but wake up. Did you really think it would be so quick and easy?
If you want it bad enough, you will do the work. You will find a way. And you will reap the riches.
Those who keep going, and don't quit, get the reward my friends.