Adding Search Bar to Commerce Pages?

Site URL: https://www.growkidgrow.com/

Hi! Am I able to add a search bar to my commerce pages? Where I am actually selling?

I was able to add to my homepage.. but would like to add everywhere.

Also, is there any way to make my search bar... better aesthetically?

I'm after the same advice.  Mine looks really amateur and doesn't provide photos of my items.