If it was downloaded within this flow, you should have the file path available to you. So, use that. Alternatively, use Get files in folder to get the files and apply sorting by creation date to get the latest file first. You can also add file name filters in the action.
If you shared some screenshots of your flow, I might be able to be a bit more specific.
-------------------------------------------------------------------------
If I have answered your question, please mark it as the preferred solution. If you like my response, please give it a Thumbs Up.
I also provide paid consultancy and development services using Power Automate. If you're interested, DM me and we can discuss it.
