That said, having been close to a bug payout sucks, but it's basically the same as standing at the roulette table "if I had only bet 28 black" when you missed your number by one.
Agonizing over "close, but not quite, good luck" is human, but it leads nowhere.
And most importantly, what happens at the table after you walk away has no effect on you. You left the game when you decided to. Asking "What if I had bet one more time?" is a rabbit hole that can paralyze and cripple your forward decision-making.
Relatedly, you may want to look up the idea of a sunk cost: things that happened in the past are done with, and cannot be changed. Sunk costs are irrelevant to your plans for the future. It is very very tempting for us to dwell on things like this, but ultimately it is healthier (and more strategically profitable) to look forward, not back.