Smooth actions in screencasts and video instructions

Question

Automation

Tell me if there are any programs like clickers that could stumble on mouse movements and text from the keyboard, and they would automate these actions smoothly, evenly, without jerks .
That is, movements from point to point along a straight line or a bezier curve, and not how the hand lies. The text in the boxes should be entered with the same intervals between the appearance of each letter, etc.
I really want to get rid of uneven movements, misses and other defects.
A separate clicker and a combine for recording screencasts will do. This includes paid products.

Answer 1

there is xdotool for X11, you can write a script for it.

Answer 2

Camtasia knows how to do it. Cursor Smoothing function (off. training video on yt)