I have difficulty to pronounce (あ段, お段) 拗音, e.g., きゃ, きょ, ひゃ, ひょ correctly.
My Japanese language teacher is a native Japanese. What she taught me is the same that I can find on the Internet. For instance, きゃ mix き and や together and speak them together.
I practice a lot, but I still can't get it right. Such instruction is very unhelpful.
I asked a friend who knows linguistics and could speak my mother tongue (Cantonese). He said that my mother tongue did not have the vowels (ia) and (io). Therefore, it is challenging for me to pronounce it correctly.
I also found some resources on the Internet, like listening to the Japanese people to speak, and then somehow, I will pronounce them correctly. Such advice is also unhelpful.
I used to have difficulty with ぞ and じょ. I overcome it by following an instruction on a book, which is to move my tongue to the correct position.
Is there any similar method to practice speaking (あ段, お段) 拗音? If not, what can I do?