Answer:
I don't believe it's that noticeable if people are insecure or anxious. Although you can see some small signs to tell if people are insecure or anxious. If a person is anxious they might be fidgeting a lot or looking around frantically. Someone insecure might always wear a sweater or they might not accept invitations to go places with a lot of people there. Insecure people might tend to not speak much or voice their opinion. Over its not that noticeable but if you look/watch closely you can find some signs.
Step-by-step explanation: