What can i do to strengthen my relationship with my siblings, they hate me?!

No easy answers: The answer to that question can be as complex as your personality multiplied by that of your sibings, and the history and family dynamics that caused it to be. There may be times to try harder, and times to be patient. Exploring this with an experienced clinical psychologist or counselor likely can unravel some causes adn solutions to the problem and hopefully yield a lifetime of better relation.