Switching to a dumbphone was the right choice

I come from five years of faithful service from a Xiaomi mi 9t, following which I decided to take a leap and switch to a nokia 105 with keys.
Given that I had to spend 150 euros for a Samsung a9 tablet, I noticed that it cut me many other expenses. For example, I spent a lot on photo editing apps, which clearly didn't work as I didn't bring my tablet with me to take photos, the same goes for Spotify. In the end you live the same even without music.
Last but not least, not having a phone with NFC, expenses also come less naturally to me.
Have any of you tried the same approach? I'm curious.