You can directly link a deck by pasting the url into the body of your post.
Like this:
https://deckstats.net/decks/162372/1757129-mi-mazoI would say initially, you would want to drop 3-4 lands and include some more win condition cards. I only see a single copy of
Sorin Markov &
Inkmoth Nexus (
Fireball really isn't because you only have lands to generate mana), which is probably why you think your deck is a "disaster".
Also, ask yourself what you want your deck to do; what is its gameplan? Once you know that, start trimming cards that don't fit that gameplan and including cards that
do.
Lastly, I suggest including more full sets of cards. Having a couple cards that are just single copies can be good as silver bullets, but having 28 cards that are just single copies is really inconsistent.
Edit: Get down to 60 cards. Any more than 60 and your deck loses consistency (similar approach to the full sets of cards point I made).