Soccer players swap jerseys after matches as a gesture of respect and sportsmanship. This tradition underscores the mutual admiration and camaraderie that can exist between opponents, even after a competitive game.
The act of exchanging jerseys serves as a symbolic conclusion to the match, reflecting the shared experience and effort of the players on the field. It is commonly observed at the end of significant games, including international tournaments and club competitions.
Sources: https://www.si.com/soccer/why-soccer-players-switch-jerseys-after-matches