How to change sexual orientation if attracted to older men but just superficial relationship and at the same time admiring girls ??

Not sure that I: understand, exactly; but there's no evidence that one can change one's orientation, or that there's an illness associated at all with being attracted to either gender, or both. If you have anxieties about who you're attracted to, you can seek counseling to cope with those feelings of discomfort, yet there's nothing wrong with who one is attracted to, however. I hope that helps.