Also, the special card rules were somewhat hard to interpret, because I wasn't familiar with playing Uno where you could chain or cancel Draw Two cards.

Well, just having 8 colors makes it really easy to get stuck drawing over and over. We played with 3 players and ended up going through about 150 cards before the game ended. I admit, we're not really the kind of people who would enjoy Uno in the first place, so we more or less went in expecting it to be bad.

wait, what happened in your game?
and what can i do to make the deck less terrible?

Played a round of this, was about as terrible as expected. Would inflict on friends again.