Some games that I've really enjoyed (not all of these are just PS5, but still).

Judgment

Lost Judgment

God of War: Ragnarok

Horizon: Forbidden West

Spider-Man Miles Morales (and Spider-Man Remastered)

Sackboy: A Big Adventure (great to play with a friend/partner)

Lego Star Wars: Skywalker Saga (I never played any lego game before but this is really fun, and great couch co-op too)

The Last of Us Part 1 (and Part 2 with the Ps5 upgrade if you haven't played it)

Elden Ring