I'm Kuma. Today,I explain how to sax thank you in Japanese.
there are some expressions,so I explain in order.
Then, I start to expressions in order.
ありがとう（Arigatou）
The best expression to say thank you is ありがとう（Arigatou). It's the same meaning of thank you in English.
You can say ありがとう "Arigatou" between friends.
どうもありがとう（Doumoarigatou）
どうも（Doumo） emphasize the meaning of gratitude, so It’s similar meaning to "Thank you very much" in English.
ありがとうございます（Arigatougozaimasu）
If you want to say thank you in a polite way, you should say "ありがとうございます（Arigatougozaimasu).
Japanese use this phrase frequently in both private and business situations, so you should also remember this expression.
How to answer ありがとう（Arigatou）?
The first phrase is どういたしまして（Douitashimashite）.
It's the same meaning of "you're welcome".
However, in Japan, people usually use different words and phrases to reply.
I explain that.
Other expressions to say your wecome
They tend to use phrases below.
・だいじょうぶだよ。（Daijoubudayo）meaning : It's OK.
・いやいや（Iyaiya）meaning : you don't have to say thank you.
・おう（Ou）: OK
Japanese tend to use modest expressions.
These are more natural expressions for Japanese more than どういたしまして（Douitashimashite）.
At last
Thst's it. Thank yo for reading this article. See you next time!