https://www.unrealengine.com/marketplace/en-US/slug/easy-keybinding-system
One simple google got me this. Its lazy, indie one man game studios have this system. Its a simple script of saying “change this variable to this input key” thats it.
it's easy, you just have to download it from the website https://simplednscrypt.org , install it, Active the service, and turn it on in the card section.
The UI is simple, and you can follow my recommended settings.
https://cdn.discordapp.com/attachments/744409443545907261/907747065382187038/unknown.png