This is probably gonna be controversial, but Brad Pitt in Seven. I have seen an embarrassing number of Brad Pitt films, and this was the only performance of his that I thought was good.
Also probably controversial: Russell Crowe* and Nicole Kidman in Boy Erased.
*Fully acknowledge Russell Crowe was phenomenal in the early-aughts when his career took off with Gladiator, but for the last decade or so, whether due to some lousy project choices or his own lack of interest, his performances/films haven't been as stellar as they once were.