insecurity
US /ˌɪn.səˈkjʊr.ə.t̬i/
UK /ˌɪn.səˈkjʊr.ə.t̬i/

1.
uncertainty or anxiety about oneself; lack of confidence.
:
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Her constant need for validation stemmed from deep-seated insecurity.
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He tried to hide his feelings of insecurity behind a confident facade.
2.
the state of being open to danger or threat; lack of protection.
:
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The country faced significant insecurity due to ongoing conflicts.
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Cyber insecurity is a growing concern for businesses.