Slop when I let off the pedal

[Yauchout]

I have had motor mounts cause that but realistically you should check your entire drive line motor mounts u-joints differentials hell even suspension bushings could cause slop. I have even seen bolts all but 3 of the bolts rattle out of the transmission bell housing that that made a truck drive like what could be called slop... really online not being able to see it its anyone's guess