That I wrote in the previous report is the example of informal greetings.
It's difficult to pronouce the fomal greetings, but you can try
Hello is Здавствуйте ['zdrav-stvui-te] Here is the three syllables. I divided them hyphens. "u" always read as in the word "put", "i" read as the last letter of the word "may". We have two alike letters И (as disc) and Й (as may)
Good-bye is До свидания [do svi-'da-ni-ya] "ya" read as in the word "yard"
Wen, good luck))))