advice needed on onedrive saving and linking/formatting. extremely basic excel sheets, problem unknown.

i have extremely limited knowledge of excel. im in Alevel, and im currently trying to make a sheet of all the papers i need to complete (to revise), so that incudes the weblink to my onedrive, which is like my onedrive account provided by the school. ive accidentally crashed the program 4 times now in the span of an hour, and i have an extremely beefy pc so my components arent the issue.

apparently the file dosent support renaming and moving, because of some format not being supported, and i cant save it / do anything with it basically. i just want to save it to my school onedrive, and it apparently hates me smh.

i dont know what ive done wrong, since i havent done anything complicated. can anyone help me out? let me know if you need to see anything and ill send it. thank you pros!!