Recover old WhatsApp Messages

I have whatsapp backup files from a a few years ago in .[login to view URL] file format I still have the same phone I was using back then (Samsung S4 mini) available if needed, although whatsapp is no longer on the phone - it can be re-installed if needed I also have the same phone number I was using back then (the sim has been replaced a couple of times due to damage), but I still have the phone number for which the .[login to view URL] files were generated on. I need an expert that knows the ins and out of whatsapp message recovery. Can anyone help me recover these messages? Skills needed: Android, Samsung S4 mini, WhatsApp, Message Recovery, Encryption