Stations have no single deck, except one table *LINK*
You want to play single deck, try off strip joints like the Stations
Fiesta Rancho, a Station property, has one table, usually unplayable due to overcrowding, and only playable at low stakes when not overcrowded. No other Station properties have single deck games.
Club Fortune and Railroad Pass, which are small grind joints in Henderson, each have one table of single deck, with poor pen. Club Fortune has Reno rules, making the poorly-penetrated game even worse.
Other than the downtown places I mentioned in the post linked below, that's all there is. Reno has single decks aplenty, and Tunica has some.