How can I keep track of changes in my excel sheet without having to share the document?

I'd like to keep track of when every cell in a certain tab of my sheet is changed and what time, but I dont want to share the document. Is there a way to do this? Also, if I need a code, could please explain step by step how to work it? Im new to this and tried with a different code and it didnt work.

Thanks!
Jose