> Why not?
Because there are simply far to many variables involved. On one dimension you have type of game, but that variety impacts everything else.
Mario Party and Call of Duty for example may impact peoples emotions differently.
Tetris and StarCraft are both test actions per minute in a different way which may mean different things for reflexes etc.
Hours per week are another dimension, someone spending a few minutes per day playing Wordle is obviously different than someone who only works a part time job to have more time for their MMO addiction.
Finances is another dimension with actual free games being well free but some people spending their life savings on loot boxes in “Free to Play” games.
Degree of socialization is again varies wildly with a surprising number of marriages starting from MMO’s but single player games obvious don’t have that.
Exercise is another with some people getting a real workout playing beat saber and others getting embolisms from sitting to long with their addiction.
Etc etc.