Hi Posylchuk
welcome to the Apple (user-to-user) Community.
Re: Alarm is not playing songs i choose it to play
If the songs have not been downloaded to your phone they will not play.
Else:
Wondering which method you are using to change the alarm sound.
Below is Apple's method, if it is any different, you might give that a try.
Change the next wake up alarm
The wake up alarm in the Clock app shows the next wake up time in your sleep schedule (if you’ve set up a sleep schedule in the Health app).
Although you don’t set the wake up alarm in Clock, you can make changes to it in Clock after you’ve set up a sleep schedule.
- Tap Alarm, then tap Change.
- Adjust your sleep and wake times.
- Drag
to change your wake up time,
to change your bedtime, or the semicircle between the icons to shift both times simultaneously. - Scroll down to Alarm Options, then change any of the following:
- Alarm: Tap to turn the alarm off or on.
- Sounds & Haptics: Tap to choose a vibration or ringtone.
- Alarm volume: Drag the slider.
- Snooze: Turn on to give yourself a few more minutes of sleep.
Above is for iOS 16, from Apple support's article:
Set an alarm on iPhone – Apple Support
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Another article: How to set and change alarms on your iPhone - Apple Support
*** Seems to say you need to "save" when you make changes to an alarm.
Hope there's something helpful in the two iOS 16 articles.
All the best :-)