I don’t feel weird if I’m just walking around in front of my home. I occasionally forget to bring a phone with me when I go outside, but if I remember I’ll go back and get one.
If I managed to get to a grocery store or bus stop without a phone, I would probably feel stupid and still do whatever I wanted to do outside, but then go directly home rather than doing another errand.
I have no problem with staring into space or looking around rather than looking at a phone. I have mobile data, but I rarely use it nowadays, and I only have one somewhat boring game application installed on my phone.
I don’t go to many places, and it’s even rarer for me to travel through multiple municipalities, so I just remember how to get to the places I often want to go, and if I was going to a distant location I’d be even more likely to notice if I forgot my phone since I’d probably want to set up navigation before leaving. I use OsmAnd for navigation so it’s not a problem if I don’t have access to the internet, and I’m used to navigating without using the internet so navigating entirely without a phone is probably easier for me than for some people.
https://knowyourmeme.com/memes/miracles-fucking-magnets-how-do-they-work