Infinity could exist and not everything could be possible.

All signs point to the universe of empty space being infinite. We have never had any evidence that the laws of nature change.

Infinite emptiness doesnt mean infinite matter or energy.

Even if there was infinite energy, the infinite nothingness could be larger.

Chaos still wants everything to settle into its lowest energy state. So that infinity besides our visible universe could just be dissociated quarks

We also use infinity in physics. We havent proved infinity but we have used infinity to discover other things.