(more negative) some people are afraid of trying something new / (more positive) some people are content with the simple, traditional ways and do not crave for the latest fashions

barking dogs seldom bite

(idiomatic) all isn’t lost; hope springs eternal

(idiomatic) to not touch something with a barge pole (to avoid contact with someone or something at all costs)

Ignorance of the law is not a valid excuse.

(set phrase, possibly idiomatic) willy-nilly; whether we like it or not

ad nauseam

it's not my fault

(idiomatic) stay put

(idiomatic) to be nothing worth mentioning