You can hope for a string of favourable matchups that will get you at least to D3, but the problem isn't with the deck itself, it's how the bot pilots it. Like it'll coin a flakmage onto an empty board, there are many other examples posted.In the current meta, if you don't snipe certain minions or counter certain specific spells, opponents ramp and it's really hard to play from behind. Try going without the bot if it ever makes it to D3+.

Stealer of souls warlock is really strong, but I'm not sure the bot will know how to pilot the full combo.

Just hit wild legend. It took 3 attempts from D2 to finally get it. All three gatekeepers were secret mage (mirror matchup), and I don't think the bot is smart enough to play that perfectly.
I have nearly 1700 games with the same deck, and a 53% winrate.

I haven't tested personally, but I think the bot would do quite well with something like Libram Paladin or aggro secret hunter.

https://hsreplay.net/dec...f/#gameType=RANKED_WILD

Change Ice Block for a 2nd Occult conjurer. Ice Block is a dead card outside of reliable activation of valet and cloud prince.
Only one counterspell, change one for flame ward.
I still have a second arcane flakmage, but I'd probably change it to something like Oasis Ally since the bot will always try and coin flakmage on turn 2.