The Voynich Manuscript's alphabet is smaller than you think (and that's why your theory is wrong).

References:

Long-s manuscript example from https://digi.vatlib.it/view/MSS_Barb....

Cheshire table from: Rene Zandbergen, No News about the Voynich Manuscript? https://www.academia.edu/39733354
Cheshire translation from https://www.researchgate.net/publicat...
Emma May Smith, The Equivalence of [a] and [y]. https://agnosticvoynich.wordpress.com...

License-free stock pictures from https://www.freepik.com/
Hieroglyph Photo by Chris Linnett on Unsplash
Various photos from Wikipedia:
https://en.wikipedia.org/wiki/Dresden...
https://en.wikipedia.org/wiki/Phoenic...
https://en.wikipedia.org/wiki/Chinese...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://de.wikipedia.org/wiki/Littera...
https://commons.wikimedia.org/wiki/Fi...
https://www.mmdc.nl/static/site/highl...
https://en.wikipedia.org/wiki/List_of...

https://medievalbooks.nl/wp-content/u...
https://www.dhi.ac.uk/category/partne...
https://www.researchgate.net/figure/S...

"Latin Alphabet" Lion from https://iconographic.warburg.sas.ac.u...

Typewriter sound effect fromSound Effect from Pixabay.