Oh stop trying to crown yourself with some wreath of virtue on this.
The fact is simply that you can try to seccede from a nation, but without the ability to survive a challenge via armed conflict, this right you insist exists, is purely academic.
If you don’t have a basic understanding of this reality then go ahead and vote to seccede from something and see what happens. Maybe write the secretary of state from the CSA for tips.
That entity won’t give a damn if you “value freedom”, they will just see someone trying to steal their territory, and they will move to stop it.
The rights of the individuals collectively supersede the rights of the nation. There is no right of a nation to remain the same. The virtue I am claiming is an adherence to rights . What virtue or value are you claiming? The right to use force to overcome people’s right to self-governance? You should check ourself.