The troubles I went through to play this game with keyboard and mouse in the past. My first attempt involved an Xbox One X hooked up to the same monitor as my PC, streaming the game to the PC over local network, only to then use a specialized piece of incredibly janky software for just this game that would translate keyboard and mouse input into Xbox controller commands. Start everything up, switch the screen over to the Xbox (so that I would have full image quality) and I had a somewhat tolerable experience. I kept auto-aim enabled though.

It was about equivalent to, although more stable and performant, than running emulators and remapping the controls of those, which also required special tools.