Some players use Rock Paper Scissors to test timing and psychology-- do you go first, mirror relocations

https://rps-gambling-a-o-u-f2-470.oakridgedigest.com/posts/what-is-rps-gambling-and-why-are-we-dissing-it

Some players use Rock Paper Scissors to evaluate timing and psychology-- do you go first, mirror relocations, or all of a sudden switch methods to confuse them?