Reflexive pronouns are pronouns ending in –self or –selves that are used when the subject and object of a sentence are the same.[1]https://www.grammarly.com/blog/reflexive-pronouns/

Direct Objects
Reflexive pronouns can be a direct object in the sentence.
For example:
- I hurt myself
playing hockey. - The girl kicked herself.
- I am teaching myself to speak English.
Indirect Objects
They can be an indirect object in the sentence.
For example:
- We made ourselves
some coffee. - She made herself
a sandwich for lunch. - They can teach themselves the lesson.
Intensive Pronouns
Intensive pronouns are a type of reflexive pronoun that is used to emphasize the subject.[2]https://slideplayer.com/slide/9013049/
For example:
- She herself
did all the work. - He himself
paid for the meal. - I myself
did all of the work.
Common Reflexive Pronoun Errors
Reflexive pronouns are commonly misused in the following grammatical areas:
Compound Subjects
For example:
Incorrect: Susie and myself will study.
The easiest way to understand that this is incorrect is by splitting up the subjects.
You can’t say
Myself will study.
Rather you would say
I will study.
Therefore, the correct sentence becomes
Correct: Susie and I will study.
Compound Objects
For example:
Incorrect: You can hand in the project to Frank and myself.
The easiest way to understand that this is incorrect is by splitting up the objects.
You can’t say
You can hand in the project to myself.
Rather you would say
You can hand in the project to me.
Therefore, the correct sentence becomes
Correct: You can hand in the project to Frank and me.
Take Your English Further
Studying is just the first step — the real progress happens when you practice using your English naturally in real conversations. A private lesson is the fastest way to get there.

References
