Can you explain the difference between “mi piace” and “mi piacciono” in Italian?

The endings of verbs indicate person and number in Italian and subject pronouns may therefore be omitted except when necessary for clearness or emphasis. In the case of “it" and “they" (referring to things) they are almost never used.

Le scarpe mi piacciono. - I like the shoes. (The shoes please me.)

Thank you for your question.

Is it okay if I am not interested to talk to any of my relatives as I saw the real faces in my brother's marriage as none of them helped us rather were a kind of disappointment and were talking bad?

Contrary to English “I like it", “mi piace” is not a personal expression with “I" as the subject. In Italian the subject and object are transposed — “mi piace" literally means “it pleases me". The verb is third person singular.

From discussion thus far you might already have understood that “mi piacciono" employs the third person plural form of the verb and translates as “they (understood) please me”, i.e. I like them.

A couple of examples:

Can they start feeding only one meal to prisoners on death row or those doing a life sentence? Because only then will it be real punishment. If they want extra food they can work or pay from their own pocket.

La veste mi piace. - I like the dress. (The dress pleases me).

The direct object pronoun “mi" is the object of the verb “piacere" (to please). Also known as conjunctive, such pronouns generally precede the verb that governs them. The expression “mi piace", employing third person singular format, translates literally to English as “it (understood) pleases me", i.e. I like it.