In my case, having a bedtime alarm would only leave me anxious and frustrated if I went to bed and failed to sleep at that time.

But I have tried something similar: setting an alarm to decompress before sleeping. No phone, no TV — just some quiet music playing or some books to read.

I still set this night alarm, but it is much easier to ignore it than to ignore my body’s natural tendency to lose steam after waking up early and having done so much during the day.

actually, I should correct my comment. Not alarm! but notification.

What helped was notifications leading up to bedtime. two hours, one hour 30 minute, "get to sleep". It sort of gives you context to wind down.