Hi there, by default Firefox on Android will download files to the path /storage/emulated/0/Download/, which is the default download folder in Android system. You can go to the file manager of your device, and find the "Download" folder, then you should find your downloaded files. Hope this information helps!

On Firefox for Android, downloads are saved to the phone’s default Download folder. You can open the Firefox menu and tap Downloads to see recent files. For the exact location, use your phone’s file manager app and open the Downloads folder. Firefox does not show detailed download paths inside the app.