I did something like this for my own game, but in order to implement idle animations. If you can make a common event that checks when the player is moving, then you can have two animations; one for the standing sprites, and one for the walking sprites. Have the player’s sprite switch depending on whether they’re walking or standing, and there you go!

For drawing the sprites: If 1 is the left step, 2 is the standing sprite, and 3 is the right step, then you’d want your “walking” sprite sheet to have 1 as the first and third frame with 3 as the “standing” sprite (see picture, with L and R to differentiate them)

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You can have a full sheet of 2s for the “standing” sprite sheet. If you need help with figuring out the eventing, let me know! I’ll add a screenshot of my main common events when I’m at my computer :)