There are two ways to use a relfexive pronoun.
When the subject and the object are the same person or thing, then use the relfexive pronoun.
For example, we do not say , “I cut me” because ‘I’ the subject is the same person as ‘me’ the object. So we say “I cut myself” instead.
When we want to add emphasis to a subjective pronoun, we can add a reflexive pronoun.
1) I, myself, cleaned the house.
2) Bill Gates, himself, called me.
3) The Prime Minister, herself, came to visit the school.