I am not wrong, Wiliam47, keep reading. It’s a whole sentence. You are making the mistake of not reading the whole sentence.
“A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.”
The right of the people to keep and bear arm is already established (NOT in the constitution) as an unalienable right. What the second amendment says is that it “shall not be infringed”.
So the constitution isn’t saying we have the right; it is saying that the no one shall infringe upon it.
The constitution was not written to tell us what we, the people can and can’t do … it was written to tell government what it can and can’t do.