Practice makes perfect. I think this is very true with speaking any foreign language. Why Japanese are not good at speaking or listening English is, maybe because we do not have almost no occasion to use it, or we do not have to use it in our usual daily life, at work, at school, etc.
Besides, our tendency to be afraid of making a mistake in speaking English is maybe another impedance. We have to overcome our embarrassment in making mistakes :hopelessness:
Guys, guess how much embarrassment I have faced so far, and still experiencing it
My husband was asked by an Australian where he could see a horse race in Japan, and wondered "what is horse rice?" You see, even Australians are not good at speaking English
In any case, Japanese pronunciation is not so difficult, because the pronunciation rules are simple according to what is written with small number of exceptions, not like English. So, you can easily master it. Don't think about difficult Kanji. Hiragana, Katakana (about 50 letters each) and some easy Kanji letters that elementary school kids learn will be enough for you. So, why don't you start challenging Japanese?
But, it may be true that this simple pronunciation system without variations might be one reason why we strugle with the pronunciation of foreign languages :disapp:
http://www.guidetojapanese.org/learn/complete/writing
https://www.youtube.com/watch?v=LrXHizFaol0
Besides, our tendency to be afraid of making a mistake in speaking English is maybe another impedance. We have to overcome our embarrassment in making mistakes :hopelessness:
Guys, guess how much embarrassment I have faced so far, and still experiencing it
My husband was asked by an Australian where he could see a horse race in Japan, and wondered "what is horse rice?" You see, even Australians are not good at speaking English

In any case, Japanese pronunciation is not so difficult, because the pronunciation rules are simple according to what is written with small number of exceptions, not like English. So, you can easily master it. Don't think about difficult Kanji. Hiragana, Katakana (about 50 letters each) and some easy Kanji letters that elementary school kids learn will be enough for you. So, why don't you start challenging Japanese?
But, it may be true that this simple pronunciation system without variations might be one reason why we strugle with the pronunciation of foreign languages :disapp:
http://www.guidetojapanese.org/learn/complete/writing
https://www.youtube.com/watch?v=LrXHizFaol0
now who still wants yuzuru with blonde hair?? 
I think the hair style has alot of do with its hideousness. Someone needs to photoshop Yuzu with his own hair in blonde
If I understood correctly you're saying that the Japanese who speak Portuguese struggle with pronouncing the L and R differently even when they've lived in Brazil for years? Sorry I don't speak Portuguese it's what I kind of understood