Since we're talking about Self here's a good primer on the views of Advaita (non-dualism) vs. Vishishtadvaita (qualified monism/non-dualism) vs. Samkhya (heavily dualistic).

https://youtu.be/Yej6AY0KNN4

Q&A session lead by Swami Sarvapriyananda at the Vedanta Society of New York on February 21st, 2021. List of questions with timestamps:
00:00​ - Intro
01:51​ - What separates the individual soul from Brahman? https://www.youtube.com/watch?v=Yej6AY0KNN4&t=111s
08:53​ - Can the self be self-aware without mind or object? https://www.youtube.com/watch?v=Yej6AY0KNN4&t=533s
16:26​ - You have said that maya projects the universe and veils the truth. Is this the same as the Samkhya philosophy? https://www.youtube.com/watch?v=Yej6AY0KNN4&t=986s
25:50​ - What is the closest concept in Vedanta to the ideas of the spirit and the soul?
39:39​ - Is Advaita Vedanta escapism?
48:09​ - Is Vedanta the same as subjective idealism?
55:15​ - How can I be sure that consciousness is not manufactured by the brain?