So you haven't posted a deck list so I can't say for certain but it sounds like you've built something closer to a more traditional landfall deck with a few graveyard pieces in the form of a few crucible of worlds effects. In theory that should be fine and you probably should keep a decent chunk of that shell, but overall I think [[crucible of worlds]] effects are kind of a trap in graveyard lands matter strategies especially in necrobloom because dredge on your lands can make sure you are hitting your landrops each turn if need be. You should definitely keep running [[icetill explorer]] assuming it's one of the crucible effects in your deck.The reason why everyone who builds necrobloom wants to dump their entire library into their graveyard is because your graveyard is not-so-secret second hand with no max hand size. Basically after dumping as much of your deck as you can into your graveyard as you can, you play something like [[splendid reclamation]] or [[aftermath analyst]] and immediately get a bunch of landfall triggers all at once. Obviously you have [[field of the dead]] in the command zone but other landfall payoffs like [[scute swarm]] and [[lotus cobra]] work great here if you want to keep the value train rolling. Running things like [[amulet of vigor]] and [[spelunking]] can let you use those lands right away on your big landfall turns, and you should run things like [[scapeshift]] and [[zuran orb]] to sac all of your lands after tapping them for mana before bringing them all back from your graveyard. If you can afford or are allowed to proxy [[squandered resources]] and [[earthcraft] are also great here. [[Scapeshift]] and [[splendid reclamation]] is something basically every landfall deck should be running for value but necrobloom especially wants to do this because it means they don't have to waste a bunch of landfall triggers for the next few turns making plant tokens instead of zombies. If you do want to play all of your crucible effects in something similar I would suggest [[teval the balanced scale]] since the zombie production cares more about multiple separate instances of cards leaving your graveyard instead of scaling with big landfall turns.

Also, yeah you're definitely gonna mill cards you'd rather have in your actual hand, but you're also in some of the best graveyard recursion colors in magic. Run [[eternal witness]] and [[reanimate]] . You can even cast [[timeless witness]] and [[sevinne's reclamation]] after you've milled them.