[skocznymroczny]

For me as a non-native English speaker it might be a case of English having confusing pronunciations. Pronunciation of loose and lose is very similar if not the same (I probably couldn't tell them apart). One might expect lose to be pronounced similarly to words like hose, rose or pose.

[kmlx]

i’m also not a native english speaker, but having to pass english certification exams made me a lot more of pronunciation.

loose is /luːs/

lose is /luːz/

notice the “s” and “z”. i’m sure this doesn’t help in languages where “s” and “z” are very close together phonetically.