I don’t know a lot about the rest of Europe on this, but here in France it’s been more than a decade SMS are unlimited in mobile plans, and these plans are quite cheap.
I have the same issue and it's driving me crazy. One bluetooth device is waking up a MBP M4 regularly during the night, lighting up an external screen. Even without any connected devices.
We also migrated away from Next.js last year to [Vike], big improvment on developer experience all around. Most of our needs are covered by just pre-rendering pages ([SSG])