no

He's a ghost so yes he's unbeatable, no one can touch him yet his chakra can interact with the physical world apparently (thats the only reason why i say he's unbeatable)

In physical instances, no, he can be beaten.

In his chakra ghost state, still no, he's still beatable.

But but he's ghost buddie, chakra attacks go no no cus he's ghost ghost.

He can be absorbed

Obviously no.

Those two abilites wont be useful if the opponent can just speed blitz his head

There are plenty of characters with Non physical interaction so him being a ghost is a non factor.

Naruto himself has shown the ability to interact with souls back in the battle against Edo nagato.

I think he is.