Red/Black Deck Review

I’m new to Magic and obviously deck building, and trying to get some general feedback if possible for this deck. I was using cards I already had. Again, any pointers or anything. I’ve never won a game, so trying to make a strong deck that’s bruta.

3 Angrath's Rampage
2 Banehound
1 Call the Bloodline
3 Cinder Barrens
2 Doomed Dissenter
4 Dragonskull Summit
4 Fireblade Artist
4 Grim Initiate
3 Lazotep Reaver
1 Liliana, Dreadhorde General
7 Mountain
4 Ob Nixilis's Cruelty
1 Ob Nixilis, the Hate-Twisted
1 Open the Graves
1 Price of Betrayal
1 Shamble Back
10 Swamp
4 Tetzimoc, Primal Death
1 Tibalt, Rakish Instigator
3 Vizier of the Scorpion

Sideboard
2 Carnival/Carnage
4 Duress
4 Go for the Throat
3 Herald of the Dreadhorde
2 Macabre Mockery