We don't do writing reviews here.
It doesn't matter, in a fantasy book, if you "explain" magic; in many ways it is better if you don't explain it.
In my opinion, your explanation doesn't make any sense at all.
In real life, the people that truly believe in magic don't really need it explained as a science. Those that believe in Astrology can believe and use astrology without any explanation for how stars influence us.
People that truly believe in the miracles of the Bible, or of Gods, do not need any pseudo-science explanation for how the magic of the miracles actually worked. Christ touches somebody, and they are healed, that's all they need. He walks on water. Period. He speaks and calms a storm. Period. How? Nobody cares.
I recommend leaving the details out. Your characters make use of forces they don't understand, just like humans made use of gravity and magnetism and fluid dynamics for millennia before knowing exactly how they worked.
You can talk about mysterious forces that observably behave differently, things the magicians can sense that others cannot. If you leave their understanding of magic much like a medieval understanding of biology or physics, there will be less for your readers to criticize about how much sense you are making.
For some of us that understand physics and chemistry, when authors try to go into technical details, our analytic side kicks in and that kicks us out of immersion in the story. Things can sound ridiculous.
You may have your own detailed understanding of how the magic works, and that would be great for consistency in the story, but you don't have to reveal it to the reader.
In my experience as both an author and a consumer of fantasy, it is best to keep the magic consistent without going into any pseudo-science explanations of how it works.