Learn how to change an old single pole light switch in this video tutorial.
I am in no way responsible for anything that you attempt!
See also:
Single Pole vs 3-Way Switch in Under 3 Minutes
https://youtu.be/FS8vyxeOOeM
How to Change a 3-Way Switch in Under 3 Minutes
https://youtu.be/U6DO7KQDMTI