Also be wary of any spice blends or pre-packaged foods. At least in the US, 99% of manufacturers are too lazy to look for any other flavor beyond onion/garlic. Its a real pain in the butt (lol)
Green onions are another good substitute. Just don’t use the white part and only chop up the green shoots.
I’ll have to give tomatillos a try, thanks for the suggestion.