My friend always beats my deck whats wrong with it?

No offense, but everything's wrong with it. You have no theme; it's completely random, with Dark Magician, Winged Kuriboh, Gadgets, E-Heroes, some banned cards (Graceful Charity, Harpie's Feather Duster, Magician of Faith, Cyber Jar, and Raigeki), and some other random stuff in it. Come up with a theme, probably Machina Gadgets since that's the deck your closest to. Also, you have around 60 cards in your deck, and you need to cut it down to 40 exactly so you'll draw your best cards when you need them. Email me for a Machina Gadget deck list. I hope this helps!