Help controller options?

Ok so confused with the controller options. First I do not use a wheel but a controller. So with the ton of options with dead zone in a and out,
and with breaking I have no idea what they all do. So this is a biggie can someone tell me what all it means? Does a lower dead zone mean more sensitive controller? Help?

Forum search came back with a ton of results. Basically: steering, acceleration, braking deadzones are easy → the lower the lower number and higher the higher number, the more sensitive that control gets.

Give it a try with the brakes; a wide range gives you very smooth braking feelling, a very narrow range gives no feeling at all (more like slamming fully)

Defaults work fine for me

I thought the same until some FM5-players suggested to go the 0-100 option. Much improved the feeling for me personally.