Honestly, 2018 hasn't been a great year for movies IMO. Not a lot of stand out titles for me to check out which makes it difficult to list even a Top 20 list.
I'm interested in watching Mirai soon. Death of Stalin and Night Comes for Us are on my list, as are Green Book, Suspiria, Isle of Dogs, Sorry to Bother You, and The Favourite.
Don't think I might get to watch all of those before the results close though.
Well, it sounds like you need a break from sad so I suggest you watch Won't You Be My Neighbor? for later. Now for something a tinge more fun, I'd say Overlord (when it comes out in a few weeks) and Den of Thieves make for solid action flicks, especially the former. Also have you watched Death of Stalin and Night Comes For Us yet?
I'd also suggest Mirai but you'll have to be on the lookout for that one sadly due the limited screenings and such.