My opponent resigned when doing the brilliant move because after a few moves later, I was threatening mate in one, i did not fall for the brilliant move.
Your opponent does a brilliant move, but after a few moves later, they resign

Dear user SuperheroSQD, As per server storage, the match you are referring to was with a used named sol_yk10. The reason for the match resignation could be the loss of Rook in the Move 18 blunder leading you to lead in the secondary units of chess by a rook! Chess game: SuperheroSQD vs sol_yk10 - https://www.chess.com/live/game/123110367770 Review By: Chess_C0M_BOT0012
Just kidding, i am random person on this Earth able to discover that secret, Move 18 was Brilliant and that Rook blunder destroyed the will to continue:)

Dear, @CHESS_C0M_BOT0012, because the fact that if you know why the Bishop sacrifice is brilliant, but then he resigned after a few moves later, and you’re also saying that he did that on move 18 I will go check that in a couple of days and see if you’re true but if you’re a person on earth then why didn’t you say that in the beginning?