The game features more than 450 Digimon to collect, train and battle according to official Bandai Namco sources
Battle position can be changed manually once per turn for each monster, during your Main Phase
Weekly Update (Feb 10): Rakdos Aristocrats Can some sweet new Ravnica Allegiance cards make an aggressive self-sacrifice deck possible in Standard
After you get more experience, you can try "splashing" for a color, which is where you play just one or two cards of a third color in your deck
Paradoxically, this production decrease has made these cards rarer in the long term
Getting stuck like this could theoretically happen at any other point where you fight consecutive battles if you've neglected to keep any backup saves, but none of these other fights feature such a huge spike in difficulty over the prior battles, so it would be incredibly unlikely, if not outright infeasible, that you could get to them and be completely unable to win