This misunderstands the premise. You cannot intuit someone’s subjective experience of reality because it is impossible for you to experience their experience of reality. You have only what they’re able to explain to you.
To come at this from the other direction, if a friend says to you “I’m having a good day” and does not appear obviously distressed, how could you judge the relative goodness of their day or if it was actually good at all?
Just think of how much back and forth must have happened for this person to be so fed up as to include this with a request for publication
Getting repeatedly beaten in competitive multiplayer games is just kinda par for the course if you haven’t learned the meta, strategies, etc. If you lack game knowledge and your opponents have that game knowledge, you will mostly lose.
If winning in the game is the only way you find enjoyment in them, then those kinds of games require significant investments of time and energy to “git good”.
I say this as someone who is repeatedly shit on in every game of CoD I’ve ever played and will play in the future. That said, I don’t gain particular enjoyment from winning alone - not that it isn’t fun to win, just that I get just as much enjoyment from other aspects of the game.
It sounds to me, mostly, that these games just don’t really appeal to your idea of what’s fun.
https://www.cdc.gov/me-cfs/index.html