They are in Opulence (Spell check) city. You have to get vacation days first to go there. The city will have allys that are like tall grass where pokemon reside.
I would start a fandom for this game but I have no idea how to.
Also, what level does snom evolve at?
Edit: I just started one. No idea what the best course of action is. Feel free to message me here if you are interested in being an administrator or user for the fandom. I am also going to...