Although nobody outside of your manager can possibly answer that, we can say that you waiting until a few hours before a day you're scheduled to work to tell them that you're not going to work is distinctly less than ideal, and will mean less good outcomes than if you'd done this two weeks ago, or a week ago, or whenever it came up.

If it's something like "my child is currently in hospital after being hit by a truck this evening", that's very different from "we agreed in November that my in-laws would be here this week instead of Christmas".

I saw some of your other posting. You are probably going to lose your job. Some states have better protections for employees. Texas and the southeastern US states have the least protections. I am sorry.

I don't think saying "family circumstances" over and over is as helpful as if you told them what the problem is. Your best bet is sympathy. You don't owe them an explanation, but they don't owe you employment either. Depending on how long you've worked there and if you're full time, you may qualified for FMLA, then you can take unpaid time and protect your job. If not, then you'll risk being fired because you missed mandatory work.

If your manager told you TWO WEEKS ago you HAVE to be there tomorrow, an email with vague excuses and a request for unpaid time off would lead to dismissal at my gig. YMMV.

Chances are 100% you'll be fired, unless you can legimately qualify for FMLA provided both you and your employer meet the requirements.

Businesses in the US dgaf about your family circumstances.

is it medical/health-related?