I have a quantum ciruit, a qiskit application, that uses four qubits and has a depth of a few dozen operations (unitary transformation). It gives correct results when run on the simulator backend but not when run on, for example, IBMQ-Lima. I suspect I need a better processor but I don't know how to get access. I set up an account for qiskit runtime, but that doesn't seem to give me counts back. I am wondering how to get access to a better processor? I am willing to pay.
Well, except for Nairobi, all of my backends have low volume. What can I do to purchase access to one of the larger machines? I contacted the general IBM support chat and they didn't know.