# are the operation applied in Teleportation circuit fixed?

The circuit you've prepared will teleport an arbitrary $$1$$-qubit state from register $$q_0$$ to $$q_2$$. The operations between the first and second barrier are preparing a Bell measurement and so those should not be modified, while the operations before the first barrier are preparing a shared entangled state between Alice and Bob and so those do not need to be modified.
Otherwise you can apply whatever operations you like to $$q_0$$ anywhere before the first barrier, or anywhere after the second barrier but before the $$CNOT (H\otimes I)$$ that prepares the bell measurement.