Do you have a specific issue you need help with? This is a pretty solid deck. Just some card recommendations, I have a budget Korvold deck too, and I use
animation module +
ashnod's altar to draw the win cons in the deck.
Soul's fire is another good option for dealing damage without attacking, and
thermopod is a cheap sacrifice outlet, though it has a rather high cmc. From your sideboard, I would definitely include the
viscera seer, as it sacrifices and it filter which cards you want before you draw. Other cards that work well in your sideboard are
seal of primordium and
reassembling skeleton, which is helpful if you are running out of creatures to sacrifice. Since you have
world shaper, maybe a
squandered resources would work, but its kinda off budget. If I think of anything later, I'll say.
Here's my deck:
https://deckstats.net/decks/146412/1496580-korvold-sacrifice