My brother & other people are beating me so easy i need help to emble a perfect deck?

okay i am getting angry cuz i keep loosing to every one in a duel my deck is mix with 2 types only and those types are dragons and spellscasters my 2 ultimate most powerful cards are five headed dragon and macian of black chaos but my brothere beat me with hamon lord of striking thunder and i didnt even get a chance 2 summon them pleaze anybody give me some help to beat him and he also has blue eyes ultimate dragon, black luster soldier and that trap card judjment of anubis i do have magic and trap cards but it aint enough i need 2 beat him