Right now I make another sheet in the document and then write there the more complex formulas with short descriptions of what they do. The problem with this method is that it takes time to correctly reference each cell and sometimes is even confusing as you need to go back and forth between the formula and the description.

I have already tried with comments and notes, but they are not ideal. Comments can be easily closed. While comments and notes are both visually disruptive and confusing for the not intended users.

So is there a smarter way to add a comment/description inside a formula?