As per the title, you can just Side Quest the apk, open it, do the login, connect a Bluetooth controller and enjoy. It’s just a big screen, but it’s nice. Also very, very easy to do! I remember when doing this for Stadia it required fiddling a little and, crucially as it was before the support for Bluetooth controllers, Stadia was the only option because the controller was WiFi lol.

As a bonus you could install a browser (here’s my pick https://vivaldi.com/android/ ) and in the future just download apk with that.