This seem like a far fetch but is it possible that by some miracle, you are able to make trainers for the games on Playstation Now PC client?
I'm currently interested in a Bloodborne trainer
PS Now is a game streaming service, much like Geforce Now. It's not that you're really playing the game on your computer, you're just playing it remotely. Geforce now created a 100GB virtual machine that I was using when I tested it. It was like having steam on a pc, but you could not actually install anything outside of steam. Not being able to directly influence the game on the remote system makes this likely impossible to do.
There's no way to influence the process when you're playing that remotely and I'm gonna go out on a limb and say there are some protections in place from the server you're playing from.