A good loser gets invited back. A sore one just gets remembered.

How you take a loss is a public statement about what you will be like to work with later. Nobody holds the defeat itself against you, since the result was always going to fall one way. What sticks is whether you made everyone uncomfortable afterwards, because that predicts something about every future occasion. The reputation forms in roughly ninety seconds.

Decide now what you will say when the next one goes against you, and keep it short and sincere. Congratulate the other side and leave out the excuses. You can be privately furious and still be someone people want back.