they don't believe in bitcoin so they don't have a sense to know bitcoin more deeply
This is what mostly happened, people don't believe in Bitcoin because they heard only FUDs about Bitcoin. So, finally they are worried and not interested to buy Bitcoin as a digital asset. We must help them to know the truth about Bitcoin, explaining to them the advantages of being Bitcoin holders. Tell them how to invest properly in Bitcoin and some true successful history about Bitcoin holders. This good information may lead them to trust a bit and gradually interested in buying Bitcoin.