All ships can be fixed.
In addition, all ships still have some "still functioning" modules.
Worst case scenario is that you have to import more things on colony market ; but all planets can export stuff too, from food to other components you can make.
Also you will be able to speed up the process by deconstructing or scraping some functioning but not essential modules, to recover some components to use in essential ones.
About your failed rolls, I also have some good news:
This landing is not final so that we could make sure there were no bugs, but once the game is updated, next landing will be "final" until our "make a new deck" step.
Well, this also means you could fail "more rolls" next times, but I hope you'll be lucky enough!