Easy way to replace electrical switch

How to replace electrical switch.
If you're unsure about any part of this process, it's best to consult a licensed electrician to ensure that the work is done safely and correctly.
Links for tools that I used:
Milwaukee Wire Strippers: amzn.to/3U1T0mO
Hilmor screwdriver: amzn.to/3K5JhHt
Klein Tools outlet tester: amzn.to/3TYIMnr
Klein Tools Voltage Detector: amzn.to/3TZzIi1