Here’s an excellent video created by Gábor (LordOfMice) showing how you can play PlayStation 5 games using a mouse, Alt Controller and Hot Virtual Keyboard. You can download his Alt Controller profile and virtual keyboard layout from the links in the video description on YouTube, as well as find out more about Gábor and his amazing creative work.
Required: mouse cursor, 3 mouse buttons (or switches mapped to them), PlayStation 5 (or 4), Windows PC or laptop, router, PS Remote Play, PS4Macro, Hot Virtual Keyboard software, Alt Controller. Full details given in the video.