How does your voicebox or your throat react to different languages and all the vibrations?

I speak English and German and a ton of Japanese. The thing about Japanese is that almost every syllable or mora ends in a vowel rather than a consonant and in English or German, it depends on the word. If I was using a singular noun in German, it'd usually end in a consonant but if it was a plural noun, it'd usually end in a vowel. Do you know what I'm saying? Now for English and German, although I spoke those 2 languages first, it's a little hard to explain the mouth movement in words. In Japanese, the mouth moves constantly up and down and every question you ask ends in か and Japanese has a ton of words that would constantly rhyme together in the same sentence than in English or German and it sometimes I'm speaking a lazy Chinese language with just a different pitch of the words and vowels or syllables. In fact, all k sounds in any language have a vibration from the throat or is that g? So do you say か or が? Z makes a buzzing sound. That's why bees go buzz buzz buzz and not buss buss buss. In fact bees is spelled bees but is pronounced BEEZ. The h sound seems to be rushing up from the throat so like when you say the Japanese word for "yes," "はい" it seems to just let your tongue go up and drop down than if you said the French word for "yes", "oui" or not move at all if you say the German word for "yes" "ja" or the English word "yes," and in Korean, for "ne" don't know how you would right that, the tongue will go up in the mouth like an l and then drop down but how many vibrations can you get speaking Japanese than English or German or anything else?