you can filter rating (by custom challenge) but why avatar filter ??
Filtering opponents

I don't trust the 'Grey Prawns' regiment. They tend to abandon their games after only a few moves and not one of them has even said "Hi".

https://support.chess.com/article/2004-live-chess-settings
There are settings you can allow with ratings but not avatar 😁
I've heard from some posts that you can filter your opponents, presumably by rating, country or whatever. I would like to only be paired up with opponents who have an avatar - is this possible?