new phone anxiety

so i upgraded from the 13 to the 16 pro for christmas this year and i ABSOLUTELY LOVE IT!! i do have some questions about the phone in general as my new phone anxiety is very bad 😭 1. how hard is it to scratch the cameras on the back? I have a phone case with a lip on the back to prevent this but it still makes me nervous 2. is there any possible way that i can damage my microphone on my phone (bottom 3 dots next to the charger port) just from blowing on it? there was a crumb of something in there and i just blew on it to get it out. the microphone wasn’t on at all but it still makes me nervous and i recorded a voice memo and it sounds all good and very clear! i know these questions sound a little nutty, but i just want to make sure my phone is still working fine as it should! thank you!