u download dnspy, get your Assembly-CSharp.dll file in ravenfield_Data\Managed. you drag the dll file into dnspy and you press the dropdown arrows until you see the "-" folder thing. Press the drop down arrow to the and find the ufo folder and delete it. Then press file>save module, then you should be done! heres a picture guide
apparently it has alternatives for mac https://alternativeto.net/software/reshade/?platform=mac#:~:text=Reshade%20is%20not%20available%20for%20Mac%20but%20there,for%20Mac%20so % 20hopefully% 20you% 20
I'm just passing by, but if this doesn't have native controller support you can always use a M&KB emulator.
https://github.com/AntiMicro/antimicro/releases
If it's just X/Y aiming you're having an issue with, you only have to map the mouse to the stick.
As far as I know, you'll have to first learn the basics of lua which you can find here:
https://www.lua.org (Make sure to read the documentation for things you're unsure of)
Then, you'll need to learn Ravenscript which is documented here: http://ravenfieldgame.com/ravenscript/