The loose industry term for this is “plot armor” [1]. There is no explicitly stated reason for the hero(es) being nigh invincible (be it person, spaceship, car, etc.). The only reason why the character survives is that it has a reason to continue existing for sake of the plot.

So yes, I suppose you can rationalize in your head that most ships are made out of super strong materials in science fiction, but unless that’s clearly laid out, you may just be rationalizing writer’s convenience.

[1] https://tvtropes.org/pmwiki/pmwiki.php/Main/PlotArmor