As you can see from the table, the main differences between CSV files and spreadsheet files are in the formatting and data processing. In a simple sense, CSV files contain only raw data, while spreadsheet files may contain unique formulas or special formatting for data analysis and calculation.
It should be noted that in many cases, when transferring or uploading data to cloud systems, such formatting and formulas may present problems or may not be supported at all. So if you need to get your data, rely on a good old-fashioned CSV.