I suggest you reread the Constitution as well as the Federalist Papers.
One of the chief premises of federalism IS state’s rights. The states did not want an overly strong central government, this is why the Constitution limits what the federal government can do to nineteen specific powers and that’s it.
Now state’s rights have de facto been supplanted by a strong central government, contrary to what the Founders intended. But that began not at the signing of the Constitution, but when Lee surrendered to Grant at Appomattox. State’s rights were further eroded by Woodrow Wilson being president and what his thugocracy did, further weakened by the creation of the Federal Reserve, and dealt fatal blows by the FDR and LBJ administrations.
But if you look at where the Constitution gives most of the power, its to the states, not the federal government.
You’re a product of the American public school system, aren’t you?