You mean the game that is not marked as verified but rather as "playable" (which really means: it starts. Figure out yourself how to make it run well) doesn't run well?
CryoByte33 on YouTube[0] has videos explaining in details different configuration presets to run games like God of War, Witcher 3, or Breath of the Wild.
He's also maintaining an impressive piece of software[1] that helps optimize your Steam Deck.
Worst case scenario, if you don't find the game you're looking for in his videos, chances are you will find a decent configuration on SteamDeckHQ[2]
Entirely unhelpful, but considering your original comment was pretty much complaining that <old device> cannot run <very new and demanding software>, I figured it was in the theme.
Thinking of it in terms of race might indicate more about how you view things. As an example, think about how frequently throughout history people in power have claimed that women "can't handle" the positions of power that men had. They cite all kinds of nonsense like "emotional" or "hysterical"... conveniently ignoring all of the hysterical and emotional men throughout history.
Think about how something like that would affect how companies are formed. Things seem much better now, but I merely wanted to highlight one of many kinds of biases that are actively affecting our society, even if they are hard to qualify.