There sure were a lot of slave revolts during the Civil War. To numerous to document. You would expect that in a time of war when the resources for recovering a runway was slim. Oh wait, there were zero slave revolts during the Civil War, so never mind.
I don’t know anybody who ever claimed there were slave revolts during the war, an enormous credit to the slaves, BTW.
There was, however, literally from the first days of the war, massive flight to Union lines by slaves whenever it became practical, and sometimes when it wasn’t.
This doesn’t exactly show much enthusiasm for their previous condition.
The easiest form of slave revolt was the most common. They left their homes for Yankee lines.
They did that in droves, enough to provide numerous regiments of soldiers to the US Army.
I figure they were bright enough to revolt against slavery in the way that gave them the best chance of success.
That makes them smarter than the average Confederate.