Avatar creation

I skipped the avatar creation when I set up my phone and I cannot find it anymore now that I want to create it. Where do I find it? Thank you

Regain your privacy! Adopt /e/ the unGoogled mobile OS and online servicesphone

you mean this https://murena.io/settings/user ?

… or the profile picture on the forum ?

Tap on your existing personal icon top right of any forum page, then the "head and shoulders " icon → Preferences → Profile picture.