My brain: Man It’s really messed up that Steve lost both Sam and Bucky…
Me: That is messed up.
My brain: Especially since Sam effectively died alone, on the ground, his wings broken by Thanos, looking on at the people he cared about fade away. Steve saw Bucky disappear, but he has no idea what happened to Sam. He has to live with the knowledge that Sam followed Steve into hell for no other reason than it was the right thing to do, that Steve pulled back into this, that it got him killed and he died alone.