How to set an alarm on MacBook Pro

There are some kinds of alarms in macOS depending on system version

and these can be set; others may exist or be available for download.

• Set sleep and wake times for your Mac - Apple Support

https://support.apple.com/guide/mac-help/set-sleep-and-wake-times-mchle41a6ccd/mac

Years ago some used Automator to create alarms in earlier Mac OS X.

• How to Turn Your Mac Into an Alarm Clock -tutsplus tutorial

https://computers.tutsplus.com/tutorials/how-to-turn-your-mac-into-an-alarm-clock--mac-50705

• Set event alerts and receive notifications in Calendar on Mac - Apple Support

https://support.apple.com/guide/calendar/set-event-alerts-and-receive-notifications-icl1012/mac

• How to Set Alarms and Timers on your Mac

https://www.switchingtomac.com/tutorials/how-to-set-alarms-and-timers-on-your-mac/

There are several ways to set some kinds of alarms &/or timers on most Mac systems.

https://duckduckgo.com/?q=how+to+set+alarm+in+macOS&t=ffsb&ia=web

Not sure what you need to do, ~ perhaps if nothing else, a pre-made app could do?

Funny enough, you can't set an alarm by default on a Mac. There are alarm apps you can find on the Mac App Store though