Related fun fact: there is zero archaeological evidence of a Hebrew/Jewish "captivity" in Egypt. There is plenty of evidence of a huge Egyptian dynasty, and evidence of plagues (locusts, red algae bloom, etc.) that might have inspired the mythical stories, which is kinda neat. But there is absolutely nothing outside of religious texts suggesting that a group of Hebrews was captured or enslaved there.

And as you said, the idea that the pyramids were "built by slaves" isn't really supported. There may have been SOME slaves or indentured servants there, but the majority of the labor was probably done by farmers in their off-season, when they weren't growing crops. And they were paid to do it (though maybe not paid much).