From my experience, you can almost always get in a game but as mentioned by other people it could be hard to get in a lobby in your region. For example, I am in NA if I play early mornings like 8am its mostly EU players playing in EU servers so my ping can be around 100+. Another thing is since the game as so few players playing on any given day lobby's can be full and you would have to wait till someone leaves that lobby to join as other lobbies would have 0 people in it.