Homosexuality is not mental disorder. The Diagnostic Statistical Manual of Mental Disorders (DSM), removed Homosexuality as a disorder in it’s third edition, in 1973.
There’s nothing abnormal about homosexuality.
However, in India the society is still very slowly accepting queer people. Being queer has been thought of as devience and has been stigmatised, and while we’re slowly progressing towards a homophobia-free country, this is a dream that might take a while to come true.