Here is the apk file for your convenience.
Please navigate to the Settings of your smartphone and search for "Unknown Sources" or simply "unknown apps" (or use the search bar at the top). You should find an option labeled "Install unknown apps". Tapping on this option will lead you to a list of applications.
Grant permission to the browser you are using (Chrome, Firefox, Edge, etc.) to download the apk file and install such packages.
Now you can proceed to install your app.