It is not difficult to pronounce Japanese correctly. Just you need to learn how to pronounce Hiragana or Katakana correctly. Hot like as English or any other Western languages, each letter of Japanese Hiragana and Katakana has its own unique pronunciation and basically the pronunciation of it doesn’t change in sentences except “は” and “へ” as I mentioned before.
So just learning Japanese Hiragana or Katakana pronunciation, you can pronounce any Japanese word correctly.
Here you can learn Hiragana and Katakana pronunciation from the videos. And after learning the pronunciation of each letter, you can read Hiragana or Katakana sentences in correct pronunciation and learn several words from this site (I wrote most of the Japanese words with Hiragana).
Pronunciation of Base Kana
Pronunciation of Modified Kana 1
Pronunciation of Modified Kana 2