nvm I found the solution

I needed the noto-font-emoji package.

Issue

While I was surfing the web, I saw a github page without all the icons; I've got suspicious and i searched emojis on google and all the results were full of empty charachers.
On my machine, icons and emoji works.

Images

Info

OS: Arch Linux (6.4.12-arch-1)
Opera One version: 102.0.4880.33
Update stream:Stable
Chromium version:116.0.5845.141