Hello my name is Viola Alaniz I am born in Ukraine I got adopted when I was 14 years old

Hello my name is Viola Alaniz I am born in Ukraine I got adopted when I was 14 years old Please help me find my uncle his name is Костяной Иван Николаевич he from Ukraine the city is kherson I don't remember the month he was born but I know the day was 13 and year 1973. My whole family died and my uncle disaper right before I got adopted in 2009. He was to me like a father he raise me almost whole my life please help me to find him or even find out what happen i still believe he is a life I really hope Yall can help me to find out what happen. It's been 6 years sence he was gone and I moved to America but I am still thinking of him everyday and believe one day I will find him or find out what happen. Thank u