Your novel is good not so much in the plot as in the way it is written, so don't change anything.
You still won't be able to make a replacement, because a beginner author and an experienced one think differently and you won't be able to change your text correctly.
And the main thing is the way you write now I like less than the way you wrote at the beginning.
Then you were a heavy logician, and I looked at your weaves, and now you get pop quite often, which is not so interesting.