“My idea is this – the scene with Tony and Neubla working together comes BEFORE he records his final message, I mean this is f**king Tony Stark we’re talking about, the dude who made the first Iron Man armor in a cave, with a box of scraps, but like Infinity War showed us, the good guys don’t always win. Tony in his desperation keeps trying multiple ways to somehow escape his coffin, but with each increasing failure his mental state gets worse and worse and he finally realizes the terrible truth – he can’t escape this one, he’s trapped and his hours are numbered and he looks back at his ruined armor and in one final attempt, rebuilds the helmet and records his final words… “Hello Ms. Potts”
In a special feature, we see that Iron Man is back in action…and he actually faces off with Thanos himself. Is this where Iron Man meets his maker? As the OG Avenger, wouldn’t it be poetic that he sacrifices himself in order to defeat Thanos and to bring the new Avengers back? It could be an end of an era to make space for the new era of superhero.
Source : https://www.distractify.com/p/will-tony-stark-die-endgame