(How can I slowly decelerate the (physics) object?) Nevermind, it got fixed

The movement feels bad with its fast deceleration when the keys are let go.

The only things that affect movement is this:

What just happens is when A or D is pressed then the car turns to the left and right. A and D keys also gives a force moving forwards when pressed. This all happens simultaneously.

Also when both A and B keys are held at the same time then it gives a boosted force forward.

I tried using linear damping to make it decelerate slower but not helping (I think) .

Here is also the object behaviors if it can help: