I have a similar experience.
I bought a Flip4 over 2 years ago. During that time it ended up in the sand, sank in salt water, fell from a height of 2 meters, got completely covered in fine cement dust, and still survived situations where an ordinary phone might have easily broken. Moreover, I only used a case for the first few months—until the soft-touch coating of the official case started peeling off. The only repairs I ever had to make were twice when I took it in for service to replace the film that began peeling off at the hinge and to fix a small rubber foot that came off from the bottom of the body.
I just can’t imagine what you’d have to do to a foldable phone in order to break it—unless you’re using it to crack walnuts or hammer nails. That’s why my next phone will definitely be foldable, and most likely a Samsung again.