You can call them misguided, uninformed, or mis-informed.
Belief - a state of mind in which someone accepts something as true or accurate.
That is known as a misconception or a mistaken belief about someone's true nature or characteristics.
Knowledge is true, and belief is something that is claimed to be true.
The noun 'belief' is a singular, common, abstract noun; a word for the acceptance that a statement is true or that something exists; trust, faith, or confidence in someone or something; a word for a concept; a word for a thing.
Confidence.
Believe is a verb, it indicates that a person has come to some kind of conclusion or has accepted something as being factual or true, as in, I believe that you are a good person. Belief is a noun, it is a specific assertion, conclusion, or datum of whatever sort, that someone has accepted as true. It is my belief that you are a good person. Belief in evil spirits is superstitious. Hence, I do not believe in evil spirits.
That is true.
If someone says that something "apparently happened" it means that they are not really sure if it is true.
Doubtless something good will happen to someone somewhere. It is equally true that something bad will happen to someone too
No, earnestness is sincere and intense belief in something.
Disbelief - lack of belief or acceptance of something as true.
It is called forming a belief. This involves accepting something as true or real, often based on evidence, experiences, or personal understanding.