why are there no profile pictures?

im new here and this is unlike any social app ive used, everyone has reddit related profile pictures or little reddits with clothing and hair 🤔 (if that makes sense)

i feel out of place with mine, should i convert to a reddit? and if i was to make mine, how? are theres rules to it? everyones look such good quality and idk how to navigate the app very well yet. it doesnt help that the app will not let me scroll down in the rules section 😭