try Eosmon and choose Sp.atk , crit , freeze and Do not get too close to enemy just spam Sp.atk in every evolution I have never lost if you know how to play this digimon it very powerful
After this comment I got a second win with GrandDracumon. With a bit of cheese tho. But that's kinda my point. It feels like you have very narrow choices. Either way, thanks for the advice.