Don't worry about it. Yes, you can abort it if you need to but I think you should give it a shot.
Who you get matched with depends on who is looking for a game when you look for one. When you set up an open call, you can specify the range of ratings you are willing to accept. Maybe next time don't leave the range so wide.
Daily chess is different than other types of online chess. You can make use of books and databases to help you play a good opening. You can't use an engine but you can look at databases.
I thought Chess.com matched random players with similar elo. Do I automatically lose the match against a far better player if I ignore the game?
I’m in the 900s and have very few real games played (I do the bots and coaches). The opponent who answered my open call is in the 1300s.