When picking or editing a gaming or anime PFP, keep your character's silhouette...

https://rafaelsniceperspectives.talesignal.com/posts/how-can-i-make-my-dark-themed-pfp-visible-on-light-mode-feeds

When picking or editing a gaming or anime PFP, keep your character's silhouette clear and easy to recognize, even small. Crop tight on the face so details don’t get lost when shrunk into a circle. Avoid busy backgrounds or text—they clutter the icon