For the energy one,
There is just energy out there in the “free form” like light energy, heat energy, etc. and in Condensed or compressed form which is Matter.
I don’t know the exact details as I don’t have intrinsic knowledge about this stuff, I would advise you to talk to some AI like meta or chatgpt for this query, it’s very helpful.
What we should know is that there is just energy and the mind has created its own world.
The Self part
It’s not something that’s absolute. It’s not an energy. But the mind could be seen as an energy or a process that can think.
It’s a mental feeling. The same way we feel things to be “fixed”. That fire example of how we feel a Manifestation to be an Entity.
Same for our mind. It’s just a process that interacts/cognizes.
Check this video, it explains everything in detail. This is not something difficult. It’s only Subtle.
Is threading a needle difficult? No. It’s very subtle and requires strong focus. Same with realising the truth!
It’s like a Magic trick, if once understood would lose all its value and the mind would attain freedom.