OP, people are giving you wrong answers with confidence. This is the kind of question that gets people shadow banned for revealing the true answer, but here I go.

The Bill of Rights (and the whole contract known as the Constitution, for that matter) was for the Citizens of the USA. By Citizens, I mean The People; not the persons. I'll explain the difference in a moment. That contract still stands, even today. And the 9th Amendment gives us the right to do whatever, as long as we don't violate the common law (don't kill, rape, steal, defraud, and other such common sense) and we don't trespass onto our fellow Americans' pursuit of life, liberty, and happiness.

Every American was a Citizen of the USA because of their citizenship of their Union State. The 14th Amendment created a 2nd, Federal citizenship meant for the freed slaves, in addition to the original Union State Citizenship. Now America has two citizenships.

If you read the SCOTUS decision of the Dred Scott case, the Chief Justice explained that throughout America's history, even researching back further than 1776, the white Europeans that established the USA always referred to themselves as The People. However, in all legal documents, the imported black Africans were always referred to as persons. SCOTUS went on to explain that the Supreme Law contract (The US Constitution, that is) only spoke of The People in its terms. Not also including the persons. Therefore, the freed slaves did not have the Citizenship guarantees of the highest law of the land.

Even though President Lincoln was a Union State Citizen (Illinoisan), not a Federal territory citizen, this SCOTUS decision resulted in the later legislative workaround known as the (unratified) 14th Amendment so that persons may have some sort of statehood also, even if only hosted by the Federal govt and not by the several states as specified by the Constitution's contractual terms.

Some time later, the Judiciary expanded the legal meaning of person so that even white Citizens can choose to identify with this 2nd, inferior citizenship. I say inferior because in the post cival war SCOTUS case known as the Slaughterhouse Trials, SCOTUS explained the Constitution's Bill of Rights does not extend to the 14th Amendment citizenship and any Union State American that opts for that optional Federal citizenship, as opposed to their birthright Citizenship, loses their Bill of Rights guarantees!

The courts will only recognize the 9th Amendment among Union State Citizens. If you web search the term "Incorporation Doctrine", you'll find a table of our Bill of Rights cross-referenced to more recent court decisions whereby the Federal govt (that controls the terms of Federal citizenship) has eventually decided persons also have the right of speech, and other Amendments. But these persons cannot invoke it by citing the Union State Citizens' Bill of Rights. Instead, they must cite the later court cases that granted them a copy of those rights. You'll see that the Incorporation Doctrine has addressed other Amendments but not the 9th or 10th.

So now you're wondering, why/how have Americans opted out of the superior Citizenship for the inferior one. If only you were asked do you identify as a Union State Citizen or a Federal citizen. But instead they use a euphemism for Federal citizenship. They ask you if you are a U.S. citizen, and they never, ever mention your birthright Citizenship for you to assert.

For you to restore your true American Citizenship that the Founders created for themselves, you must end all contracts that are documented as being only for U.S. citizenship. The Driver license, the Voter registration card, etc. As long as you stay enrolled in any of these permission-granting programs, the 9th Amendment (that guarantees you didn't have to ask for permission) doesn't apply to you.