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

https://dlf-ne.org/why-do-subtle-expressions-fail-in-small-profile-icons/

When picking or editing a gaming or anime PFP, focus on a clear silhouette and high contrast so your icon stands out even small. Crop in on the face to keep details recognizable and use a simple background—avoid text