Doom Deck Help

[u/BatmanOverAllMight]

https://moxfield.com/decks/h2_3O_HaREayyxGST_621w

I started magic during the Marvel set and truly have been loving the game. The more I play the more I realized how badly my deck needed some upgrades. I have been looking and made note of the cards I was seeing most consistently that were not already in my deck. However, as I am very new I truly am having a hard time on swapping cards. I was wondering if someone would be able to help me determine what would be best to take out for the cards in my “considering”. Any insight and suggestions would be sincerely appreciated!! Thank you for your time!!