how do i save an ENTIRE Project NOT just scenes or package the ENTIRE project with all scenes files assets etc etc.

how do i saev an ENTIRE Project NOT just scenes or package the ENTIRE project with all scenes files assets etc etc.
I have to upgrade unity and I want to save it all

please only respond if you are 100% sure of what you are saying and know how to export/ save the ENTIRE PROJECT
I cannot state this enough, I want everything assets folders images scenes etc etc EVERYTHING!

I have read for 3 hours and can only find how to save scenes or copy folders but it doesn’t include scenes etc

Why does unity not make this easier? its so important… especially with all the upgrades/ versions they do…

Right click in the /Assets directory of your project window and select Show In Explorer. You’ll see a directory structure containing folders called Library, Assets, ProjectSettings, etc., together with a YourGameName.sln and some other files.

Those folders, and everything they contain, is your project.