Gia, I have some good news for you. I have recently embarked on the journey of solving this exact same issue with my MFG pedals and AFV standalone client. It requires 2 different applications. vJoy and UCR.
UCR can be found here: https://github.com/Snoothy/UCR/releases (be advised you will need to unblock certain components after downloading, it should do it automatically the first time you open)
vJoy can be found here: http://vjoystick.sourceforge.net/site/index.php/download-a-install/download
This is my configuration within UCR:
Then this mapping is set up for