yeah but it’s not contextless, it’s uh, most letters are pronounced how you’d expect (you have to expect the correct things) except these: <list of weird shit>

like, you never have to explain that k means k in polish, german, english, … this is just expected.
b is likewise pretty stable, and so are d, t, f, g, h, j, l, m, n, p, r, s, x, z, v. people also tend to have an idea of a e i o u that is good enough to start with.

and so you only really have to learn the specifics, like what c, w, y mean and are there any extremely weird choices? (there usually are a few in every language)

of course, this gets worse when the other language has sounds you’re entirely unfamiliar with and dont know how to approximate