If you want to release projects into the general public, you have to play by the rules.

Itch is a store. Even if you do not collect payments. If you publish you need to be able to enter contracts. Minors cannot do that. This is not a thing about wanting or not. It is not legally possible. Exceptions apply, like if you are at least 13 years of age and have parental consent (on Itch). Which basically says, your parents will take legal responsibility and go to jail, if you screw up.

Imagine an underage developer releasing stolen assets. Another developer buys that in good faith and uses the assets in a game, but it turns out a 10 year old sold it. Who is responsible? Who pays the damages?

Of course you do not have to go to sites geared for small children. But using a site like Itch as a publisher is still not allowed. Also there is the whole social interaction with strangers on the internet. You need a safeish environment for that. Those sites geared at children have that. Itch does not. And I am not speaking about nsfw content. I am speaking about mundane things like a project getting a 1 star rating or a bad comment. Or people getting into an argument. Talking politics. Being a nuisance for grown ups by acting like a child (remember, we are talking about kids here)

So, if you want to publish games as a kid, you need to go to sites that allow this.