How's my first deck looking

I present to you my brain child. Please be nice he's new. In all seriousness I'm still fairly new to commander building and want to know what you guys think, I posted about this deck before, unfinished at the time, but now I think its done.

There's a few ideas going on here with one being to pull out my deck with Bolas citadel and have as much healing (and pinging) as possible to keep my self alive. Then having Amalia remove lands from the top to keep the ball rolling, as well as indestructible to avoid blowing my own creatures up. Then i also have Vito and Tainted Sigil as a combo along with a few more different combos in there.

My real concern is if ill even be able to hang on long enough to pull out the win cons. Does it look like I need more ways to stall or should I start training my charisma and speech levels to beg the table not to trample me?

Let me know if yall think i should change anything, there are a few cards I'm not too sure about like Dawn of Hope, Gift of immortality and Smothering Tithe

https://moxfield.com/decks/NF2V2rnX30C38m_dMSktHg