My pad kee mao turned out like shit

https://thewoksoflife.com/drunken-noodles-pad-kee-mao/

I was wondering if some of my ingredients broke the recipe. I used Thai basil instead of holy basil, soy sauce instead of Maggi Sauce, and didn't use white pepper. Basically, the flavor sucked. Any tips?

I've had amazing pad kee mao, and it's one of my favorite dishes, but it's so hard for me to figure out a recipe that I would like just by looking at the ingredients lists. I didn't like this one.