Are coincidences God’s revelations to us

Hi Everyone

Very recently I saw a video which was shared by one of my friends in which the speaker calls himself a prophet. He states that coincidences which happen around us are usually revelations of God.

Is this true and should we look into coincidences seriously expecting them to be God’s revelations to us especially when we are waiting on some answers from God ?

Also , how can a person claim himself to be a prophet by himself?

Sorry , if the questions seem silly but some of my friends are into those prophets and prophesy all the time and I feel they are heading into wrong way or being misinterpreted about the truth.