How does a person express his love?

Sometimes people feel unloved not because they are, but only because everyone interprets this feeling differently, putting different concepts into it. Most often, a person expresses love exactly as his parents taught him. And not always in a good way. As a child, a person does not distinguish between good and bad attitudes. For him, at the genetic level, parents are a source of love. And some parents don't show love at all. For them, love is something abstract, they believe that it is not at all necessary for children to talk about it or express it with caresses or hugs. Growing up, a person projects the same behavior onto a partner. Awareness of this fact helps to better understand the state of the partner and the attitude towards you.