I don’t have an alarm anymore, thanks to the pandemic and home office. What a game changed. If I do have to set one up for important events, my smart alarm from my watch wakes me up in light sleep phase. Even with a noisy phone watch, my body does not feel like getting asleep again. I suppose, if you fall right back asleep, you did not sleep enough. Try to go to bed earlier and if you wake up a lot at night, try to identify why? Is your blood sugar falling too much, are there noises, are you stressed during the day? A good night sleep should be uninterrupted, consistent regarding the going to bed time, and should make you feel refreshed in the morning.