You're lucky, I had my S23 Ultra a week and micro scratches appeared, just by putting in a pocket. I don't carry keys or anything sharp and it just somehow still got them.
My sons A34 has a nice scratch in the one corner from something and he also doesn't really put it in places with sharp objects, though I'm sure he got that one at scouts when he snuck his phone there.
So yeah rather get a screen protector, not a glass tempered one, those do not work, but a gel one, preferably the Samsung one (though it's a biatch to put on).