Lower Mouse Speed/Mouse Deceleration

I set the mouse acceleration via xfce gui settings to 0. However, my mouse speed is still too high. So I tried to fix this using the arch-wiki article on mouse acceleration. I cannot execute xinput, so I created the 50-mouse-acceleration.conf file (in /etc/X11/xorg.conf.d/) with the following content:

Section "InputClass"
	Identifier "MyMouse"
	MatchIsPointer "yes"
	Option "ConstantDeceleration" "2"
EndSection

I restarted my machine but my mouse speed remained the same.
Additionally, I tried to manually change the mouse acceleration by setting the “acceleration” property to a negative value in ~/.config/xfce4/xfconf/xfce-perchannel-xml/pointers.xml but this did not work either.

Is there any other way to lower my mouse speed?

Just to be sure, in the GUI, did you choose your mouse in the drop down list, because the default selectioned item is the keyboard.

Yes. I selected the right device and changing the mouse speed via the GUI works fine. The 0 setting is just not low enough for me :frowning:

Mouse may has a high dpi value. If it supports adjustability with a tool like Logitech MX mouses application Solaar, it may work slower