"English is easy - only 26 letters!"
So to read English, you’re looking at 104 distinct characters, and that’s before you discuss diphthongs and digraphs.
E.g.: If you’ve seen the letter “o” in one variant, you’ve seen it in other variants too.
I think Cyrillic doesn't even have letter-case, which I've often found interesting.
See: https://en.wikipedia.org/wiki/Cyrillic_alphabets, https://en.wikipedia.org/wiki/Cyrillic_alphabets, https://learnrussianstepbystep.com/en/capitalization-in-russ..., etc.