iPhone alarms not going off despite fully charged battery and attention awareness disabled

My boyfriend's phone is for some reason very quiet. The sound his phone makes at full volume versus my phone at full volume is laughable (and we both have the same gen phone). So we strictly use my phone for his work alarms. We are young, but he has a very good job and is a very important employee. I already know that with the IOS 26 update, there's the attention awareness problem where if it's on then your alarms may not go off. I already have it completely turned off. So tell me why my alarms still aren't going off randomly?! My boyfriend is over an hour late for work AGAIN because of this issue. We just started living on our own and money is tight at the moment. We just started celebrating that he gets extra hours but the only was he gets those hours is if he works the required 40 hours a week. THIS ISSUE IS COSTING US HUNDREDS AS WE SPEAK! He's now lost a $300-$400 incentive, over an hour of pay, AND overtime pay!!! We do not have the money to keep doing this, APPLE YOU NEED TO FIX THIS RIDICULOUS UPDATE ASAP BECAUSE WE'RE NOW DOWN WELL OVER $500 BECAUSE OF YOU!

[Re-Titled by Moderator]

Original Title: Why are my alarms not going off even though my phone is fully charged, it didnt update in the night, they were turned on, and my volume was all the way up