Their is flood of earnings online idea course.
People buy but they not successful after lots of hardwork but you should think about it.
Why you not successful.
When people is still earn money online as they wanted. Somebody have believe that they earn.
I think these are few reasons...
1. Worst content
2. Depend on copy paste
3. Not creative
4. Thumbnail/Title not show your subject
5. Less try
6. Cheap equipment
7. Not have perfect strategy
8. Narrow/negative think
9. Unskillful
10. Keywords problem