“Actually they still perform them but at the Mount of Olives. And it’s symbolic.”
Symbolic is all that they could be. Without a High Priest or the Ark, the rituals simply cannot be performed as commanded by God. I can symbolically sacrifice a blemish-free bull in my backyard, and sprinkle some blood around, but this is not what the Lord commanded.
Without the Temple can’t be done of course ... but until G-d brings an earthquake to Jerusalem and tumbles the Dome of the Rock so the Temple can be rebuilt, then .....