Let’s get the obvious part out of the way.
For the second straight game against the Mets, the Royals saw a number of...questionable balls and strikes called against them. Also for the second straight game, the Royals saw a runner attempt to steal second late in a very close contest, appear to beat the throw handily, and then saw him called out after a lengthy delay when the Mets challenged the play and no obvious angle showing the runner leaving the base could be seen on the televised broadcast.
Those things happened. They hurt the Royals’ chances of winning.