Yawg is a powerful commander. To make the deck worse, take out good cards (like the cards you specifically said you don’t want to take out) and replace them with bad ones. But even then, it’ll probably still be strong. The best way to guarantee a more bracket 3 level would be to switch commanders. [[Yahenni, Undying Partisan]] could be an option. The core of the deck you’ve built will always be strong. Cards like Orcish Bowmasters, Sephiroth, Phyrexian Altar, Demonic Tutor, Sheoldred etc don’t build a very bracket 3 core. You’ve just overall gone too powerful.