Is there any form of consistency for when the files get added? If not currently, is that something that could be done?
If so, one easier way to do this would be to use a scheduled trigger such as hourly, daily, or daily at certain times. When the scheduled time happens, it gets all files in the folder, gets their contents for each file, and appends a new row to an excel table.
A very rough example:

I don't know what information you are trying to get from the files, but you can just change the "Get File Content" action to what's needed. The "List files in folder" will pass both the file ID and file Path as dynamic content.