Hi there, Yuki!
I use the "International Phonetic Alphabet" when I teach English! I also use it when learning other languages (French, Spanish, German, Italian, Japanese, Russian and so on) Any quality dictionary in any language should use it, too! But, there are some dictionaries that don't! It's certainly worth learning the IPA! And, it's not actually that difficult, Yuki! The benefit is that you can use it for absolutely ANY LANGUAGE in the world!!! It would be time well spent, I believe! I reckon you can learn it in under 5 hours, easily! I learnt it in about 2 hours and have been using it for over 40 years!
Here's a link to the Wikipedia page explaining a bit about the "International Phonetic Alphabet" (IPA):
https://en.wikipedia.org/wiki/International_Phonetic_Alphabet
You won't regret taking the time to learn it, I can assure you! It unlocks the mysteries of every language in the world! I even used to use it when I was teaching English in Tokyo, many, many moons ago!!!
Good luck and happy language learning, Yuki!
Nick