It defines Webmention as: Digital breadcrumbs left by internet users to show they've visited a website, usually accompanied by a virtual pat on the back or a confused 'How did I end up here?'
I haven't been able to do that too, but, here's my experience regarding smartphone use--When I was using an Android, I'd go to accessibility settings and turn the display grayscale. It felt so /tasteless/. Like food without salt. And my smartphone use went down.
When I switched to iOS, I deliberately chose the little SE 2020 edition with a terrible battery so I wouldn't use it much and it has worked. I still click a lot of pictures, use the banking apps, whatsapp here and there, readonly email access but haven't been wasting time on it and it makes me happy :D
In fact my first smartphone ever was a BlackBerry Q10 (in 2018!), deliberately chosen to not get into smartphone addiction.
By the way, kome, would you please get in touch with me? My email's in the bio. I'd love to chat with you about your time prior to having a smartphone :)