I have a couple times. The last time was a couple years ago with someone I met online who I was getting to know but didn’t like after the first date. They asked if I felt like watching some movie and I didn’t respond and they didn’t follow up. Tbh, I probably would’ve answered if they had sent a second text. I guess I avoided telling them the truth but it stuck with me like a pebble in my shoe and I feel bad thinking about it.
Yes. I’ve once ghosted a close friend of mine, because I had difficult health conditions and needed a break from school (that’s where we met). I didn’t want any human contact, so I just isolated myself and changed my phone number. It was unfair towards her, because she was a really likable person, but I just couldn’t handle any human contact at the time. I regret not telling her.