A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Microsoft 365 Basic plan doesn't include desktop version of the office apps. It is basicallly only for 100GB of OneDrive space.
If you need to edit your Excel file, you cannot do it via the app but you can do it via the free web version.
Go to https://www.office.com, sign in, and then click on the 9-dots on the upper left to find the apps, and then choose Excel, from there you can open the file that is already uploaded to OneDrive and edit from there via the web broser.