The commands that work for me was:

1. For listing the Id's in my case was ID:14 'ELAN1200: ...' the code:

xinput list

2. List the properties for this ID:

xinput list-props 14

Then I set the value of the property "libinput Scrolling Pixel Distance" to 50, you can change this value by default is 15, if the value is bigger the acceleration is slower, the code:

sudo xinput set-prop 14 "libinput Scrolling Pixel Distance" 50

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sudo xinput set-prop 12 "libinput Scrolling Pixel Distance" 50 （ thinkpad x1 nano g1）