Oh yes, please explain to me how the US would go about changing the 2nd amendment right now given how the legal mechanisms for doing so work. It's basically impossible at the moment.
An amendment may be proposed by a two-thirds vote of both Houses of Congress, or, if two-thirds of the States request one, by a convention called for that purpose. The amendment must then be ratified by three-fourths of the State legislatures, or three-fourths of conventions called in each State for ratification.
Altering the constitution is an extremely tall order in today's US politics. It hasn't been done successfully in over 30 years and the one prior to that was over 50 years ago.
The Republicans can barely even vote in a house speaker right now when they have the required majority to do so. Good luck getting a change to the 2nd amendment through. It's just not going to happen.