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

https://highstylife.com/how-do-i-turn-a-detailed-game-artwork-into-a-clean-profile-icon/

When picking or editing a gaming or anime PFP, focus on a clear silhouette and crop tightly around the face to keep it recognizable. Use a simple background with good contrast so the image doesn’t get lost when shrunk