At times I am a sore loser, it’s not that I care if I won or lost a game. What used to upset me was getting to a point in a game where you feel losing in inevitable and no decisions you can make will allow you to win. Yet, the game is not over it might have 30 minutes left.
One thing to try is play different games. Monopoly is probably one of the worst games for this you can spend 2 hours slowly losing all your properties, just don’t play it. Personally I like games like ticket to ride, where a large part of the final score is hidden. Because you don’t know exactly where you stand the game it makes it easier to believe you have a path to victory, or at least not last place.
Edit, looks like Firefox is smarter than me, ignore this.
I don’t know what the link was doing, but just because FF thought it was “tracking info” does not mean it was nefarious. It could be used for authentication or security. I have not tested it, but I presume this would break a “reset your password” email link.