You posted this. Have you ever thought about what it means? Have you considered its implications?
In so many words, it says "We states retain what we have not jointly delegated to the government of the United States." In a clear and unambiguous fashion you read the words that cede some level of sovereignty, freedom, independence, power, jurisdiction, and rights from the states to the national government.
It could not be simpler.
It is obviously far too difficult a concept for you to grasp. The people never delegate sovereignty to the government.
I wish you good luck at overcoming your reading disorder.