Certainly not to the extent that you seem to believe. And remedies were available to them outside of rebellion.
Of course, so they chose the lawful constitutional remedy, secession.
Only to unlawfully become the target of Northern aggression and invasion by the Union Army.
It was a terrible time in our history, all deaths were unnecessary, but Lincoln was going to have his way, come hell or high water. What a horrible price was paid for his tyranny.