Statistically, you absolutely are. There’s good data to back it up: even when looking at the same vehicle category, the risk of death is smaller in a bigger vehicle.
Which is of course exactly what you’d expect. It’s basic physics after all. And there’s simply more metal between you and the thing that you hit / hits you.
Still, the inverse also applies: driving a larger vehicle is more dangerous for everyone else on the road, so drivers should be extra careful. Everyone wants to get home safe.