Overconfidence: being too confident

what is the opposite of overconfidence?
We could say “ underconfidence “but more commonly we use “low self-esteem “
Low self-esteem: feeling worthless 👇
“Nobody loves me” “I’m not good at that”

Culture difference:
confidence perceived as: 1.arrogance
2.competence

Displaying low confidence:
1.in some cultures :
Shows humility
Shows respect to the other person
2.in other cultures:
Shows weakness
Shows incompetence