When choosing or editing a gaming or anime PFP, focus on a clear silhouette and...

https://purepfp.com/why-bold-game-characters-remain-recognisable-in-tiny-profile-icons/

When choosing or editing a gaming or anime PFP, focus on a clear silhouette and crop close to the face so details don’t get lost when it shrinks. Keep the background simple and avoid text, which gets hard to read