I don't like mouse acceleration usually, and prefer to use a linear model. On full DE's like KDE, there is always an option to set this.

In i3, we can set all mice to disable acceleration using libinput and xinput

exec_always for id in $(xinput list | grep "pointer" | cut -d '=' -f 2 | cut -f 1); do xinput --set-prop $id 'libinput Accel Profile Enabled' 0, 1; done