Being sick for the big game is brutal timing. Brutal timing is still not a judgment on you.

Bad luck arrives on specific dates, and the date can make it feel aimed at you. Illness does not consult the calendar, and the fact that it landed on the worst possible day is arithmetic rather than meaning. The mind hunts for a reason anyway and tends to settle on something about you, which is both false and expensive. Coincidence really is just coincidence.

Rest properly rather than trying to prove something by playing through it, which usually costs you the following week too. Then pick the next date that matters and put your attention there. Asking why it was this weekend will not move the weekend.