The Wii U has sadly gone down as Nintendo's worst-selling console of all time, with the company reporting sales of only 13.56 million units. That's a massive flop considering that Nintendo's other consoles like the Wii, Switch, and DS have all sold over a hundred million units each. On top of its low sales, the console had limited support from third-party developers and received very few third-party games.
Source:https://www.cbr.com/nintendo-wii-u-underrated-advanced-switch/