I work an office job in the US. You need to find a better job. No one here is required or even expected to skip lunch. Scheduling is often difficult, so many of my colleagues put it on their calendars as reserved time/another meeting. You can’t schedule a meeting with John at noon. It doesn’t matter if it’s because he’s in another meeting or at lunch; he’s already booked.

Yes, there are many terrible employers. If you work for one, you need to leave.