Well the c being s and k thing comes from latin I think :3 like v and u being the same letter… and I believe i also had a second sound? Plus there’s vowel shifts that happened after the writing was standardized and all that, and characters that no longer exist like Þ and ð

Either way it can be confusing when coming from a language with a fairly regular pronunciation ^^ (though of course we also have some quirks lol)