MTG Salvation

Hi everyone!
I'm a player relatively new to Commander and Magic in general, but I consider EDH to be the most fun format I've played and so I wanted to build myself a deck. My main objective was to build a casual, budget control. What I've ended up with was a control/mill deck with a theme of using your opponents' cards and Circu, Dimir Lobotomist as the Commander. However, it's still just the first draft and I'm new to deckbuilding and playing the game in general, so I wanted to hear some opinions and suggestion about it. Keep in mind that it's a budget deck, but you can still propose some expensive cards that I'm going to save in maybeinthefutureboard. For example, I know I can put in better lands, but these come with a higher price.
TL;DR
Here's my deck

Please help me with making this deck the best it can be within budget!
Some observations I made while playtesting:
- Toshiro Umezawa is pretty underperforming
- It can really struggle without good starting cards. I thought about maybe adding more card draw.

Welcome to the format! Man, you chose to activate HardMode for your first commander. If you are married to Circu, I have two pieces of advice - you can consider them together or separately. The reason I make these suggestions is that Mill (i.e., destroying your opponent's libraries) is nigh-impossible to make work in Commander. Your opponents are all playing 99 card decks and you have multiple opponents, so your work is cut out for you. That's before we even consider the fact that:

• Traditionally, milling a card can be psychologically damaging to an opponent but has no actual impact on the table. In other words, every Circu trigger, every Mirko Vosk trigger, every casting of Traumatize - basically does nothing to protect you or end the game until you've milled all 99 cards.
• Some opponents will be utilizing cards like Ulamog, the Infinite Gyre, Elixir of Immortality, etc, etc, to make themselves un-millable.
• Many opponents WANT you to mill them, because they plan on killing you with Living Death or otherwise abusing their graveyard for power. Not only are you doing nothing with mill, you are occasionally (at least 50% of the time) virtually letting your opponents draw cards.

To combat this, you need to bring more firepower to bear.

Option 1: Abandon the mill theme, and focus on being a Lantern Control deck: your gameplan is to use Lantern of Insight plus all your mill/exile effects to effectively fateseal opponents to death. You are effectively mostly there, but will to double down on this plan with Ghoulcaller's Bell, Lurking Informant, Wizened Snitches, Psychic Surgery, and Zur's Weirding as additional library manipulation options. Finding those options is so important that you may want to add Trinket Mage and Fabricate to tutor them up. You also need some "do-nothings" to trigger Circu (Cavern Harpy and Shrieking Drake), and need some more defense from hate (which is expensive - we're talking No Mercy, Propaganda, Ensnaring Bridge). But Vengeful Pharaoh, Meishin, the Mind Cage, Crawlspace, and War Tax are some budget alternatives. Sometimes, opponents lose because you exile their entire library with Cavern Harpy plus Circu, Dimir Lobotomist the hard way, 2-3 cards at a time, ensuring they are only drawing lands or uncastable spells - but your win condition is actually irrelevant. The goal is to make opponents so unable to effectively play that they scoop.

Option 2: You want to win via mill-out? You need to cheat. Specifically, you could run the Duskmantle Guildmage + Mindcrank combo to instantly wombo-combo people to death. There's tons of instant-kill mill combos out there, but this is a budget friendly one.

No matter what you choose, I would agree that you need more early library manipulation - cards like Brainstorm, Ponder, Preordain, Whispers of the Muse, Nights' Whispers, Frantic Search, Notion Rain, Visions of Beyond, Cremate, Opt, and Peek are quite good for you because you can cultivate your hand early and they are cheap Circu triggers late. Relic of Progenitus also gets a thumbs up from me.

For what to cut, I really do think you're better off doing one or both of the above than you are running stuff like Mirko Vosk, Bitter Ordeal, Traumatize, Sadistic Sacrament Mind Grind, Fleet Sallower, and Fraying Sanity. I've also played Roil Elemental in lists myself, and it's too slow and fragile. Last for cuts, I'm not convinced that Dralnu, Baral, Yawgmoth's Vile Offering, Reanimate, and The Eldest Reborn are doing enough here.

Finally, two generically powerful cards to consider for Circu: Oblivion Sower (obviously) and Future Sight (you can use Circu to mill away uncastable cards or lands to keep on digging).

Hope that helps!

To continue the card stealing theme you can add fiend of the shadows, kheru mind-eater, nightveil specter.
I use the infinite isochron scepter / dramatic reversal combo for exiling libraries with circu.
I'm also testing stuff like metallurgic summonings and docent of perfection, so i can amass a large amount of tokens just by controlling the board.

Hope it helps.