The module you have includes a resistive sensor and a comparator which produces a 1-bit value (0 or 1). There's nothing you can do to get a more detailed signal from that module.
There are two main approaches which allow to read analog values from resistive sensors with devices which don't have analog pins, such as raspberries.
simulate this ...
It is inadvisable to mix libraries.
You can control a servo with
See https://gpiozero.readthedocs.io/en/stable/api_output.html#servo for documentation of the servo class.
NOTE that gpiozero, by default uses RPi.GPIO
GPIO Zero builds on a number of underlying pin libraries, including RPi....