For me, it has to be Korean (Hangul is easy to grasp) but the pronounciation, my god: it’s like I can’t understand a word being said when they speak (while that part is manageable in listening to spoken Japanese). Maybe it’s just me not having the “trained” ear on listening to Korean phonology in real time whilst learning the language.
I wouldn’t call Spanish j an r, it’s more similar to German ch and Dutch g.
Heh-sus, Huh-an, Heh-remias, Hoh-achim
in Portuguese it’s the sound of rr, hence “throaty r”
TIL. Kinda sounds like Portuguese is the odd one out … but I guess that doesn’t help when you’re a native Portuguese speaker.