How can I be happy in the future ?

I'm 21 year-old student in Japan, and these days I'm wondering if I can have a good parter and live with him and be happy Actually I'm not into Asian guys but European and white guys. So I will have some difficulties like cultural and language differences between future parter and I, also I think being gay is a one of the difficulties to be happy because.... you know... Every time I see a normal family, they look happy... but I can't love womenI just can't imagine how I could be in the future Please give me your opinions