I meet so many travelers in Thailand raving about how good the food is, but all they seem to eat is green curry and pad thai at their guesthouse and the restaurants geared toward foreigners... To be sure some of those places are decent, but nowhere near as good as the incredibly cheap and delicious food you're talking about here. I will literally never get tired of eating pad graprao 555... It can be intimidating though when you're new here and don't know what kind of food a place serves until you walk in. I wrote this guide that helps with that by explaining how to identify the type of restaurant you're looking at from a distance https://itsbetterinthailand.com/guides/identifying-thai-restaurants/