People still think of Lando as “The Guy Who Betrayed The Trio” and that’s some grade A bull.
I mean what would you do if you had people to protect and Darth Vader, Scariest Dude in the Galaxy, comes marching up to your door with a whole battalion of soldiers? Like? How much choice do you think he actually had here? Not much because Vader literally changes the rules on him every scene they’re together so the deal goes from “Trap the smuggler and his friends” to “Han’s being tortured and frozen in carbonite and taken away and the others that were supposed to be left untouched are also being taken capture indefinitely right now” and Lando has all of no control over any of it.
And then the second he realizes what’s happened he risks everything to help Chewie and Leia out. Leaves his cozy home to help them. Joins the Rebellion? Frees Han? Blows up the second Death Star?
But sure he’s just that sleaze ball who betrayed the gang. Sure.