I can’t find a copy of 2k26 to buy

I went to two separate Walmarts, and a target, and they’re sold out of the game. I went online to look at Walmart’s website and apparently you have to order or something. How in the world is a game sold out on opening day? Is this common for games to not be available the day they are released? I’ve been looking towards this day for a while, I never thought that I wouldn’t be able to just walk in and buy a copy of the game.