Can someone please help me review multiple conflicting copies that I have of a spreadsheet?

One document will let me compare it another won’t, but I need to find the changes from this document and another two then add any of the changes to one and fix it so it’s not a conflicting copy. Somehow everything got screwed up yesterday and it saved in multiple places between OneDrive and Dropbox and my computer and every version of it got changed and now I have a conflict in copies of conflicted copies

im trying to use an online comparison and it doesn’t seem to be working either