Did I hit the red flag of new company?

I've experienced a lot of potential red flags that are pretty concerning. Some of these include:

1. A manager who didn't turn on their camera during our video call, during which their HR staff was clearly multitasking and not paying any attention.

2. Managers blaming slow Wi-Fi when their building and area are experiencing high internet consumption.

3. Managers who constantly ask about my parents' information.

4. Managers who get angry when we don't answer personal questions about what we want out of the company. In addition, they continue shouting at us when they're busy multitasking.

5. A manager who keeps having to rearrange the interview three times.

Is this enough information to conclude that I've encountered some serious red flags?

Updates
4 mo
6. I'm pretty sure that if I sign on with this new job, I'm going to run into some real trouble with the new company. When I interview there, they don't want to give me any documents to prove it. I've asked them about the documentation and they just want me to start working right away and avoid the paperwork. This is too much and I can't sign on with a company that doesn't have its paperwork in order.
Did I hit the red flag of new company?
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