General and vague feedback is not helpful to the author you are giving feedback to. Statements such as "That's good." " That stinks" "Everything is fine" is not good feedback because it isn't specific and won't help the author improve. Instead feedback such as "Your thesis structure was perfect but your introduction was confusing and rambled on" is much better feedback because it is specific and actionable.
A Good example of giving constructive feedback click here on this link. Below is part of the example fo giving good criticism that is objective.
Example of Essay Rubric- Feedback
Below is a bad or poor example of giving feedback to other students. If you complete work like this you will receive low grades and depending on the language could be in further trouble.
Bad Example of Essay Rubric- Feedback
How to send your feedback to someone sick/ in quarantine and how to send if you are the one sick/ in quarantine.