VAALMONICA DECK : CHEAP AND STRONG ! Yu-Gi-Oh! Master Duel 

In the first duel... when they used Nibiru, why didn't you just chain S:P to banish itself and another of your monsters until end phase? You'd have gotten yourself an extra disrupt on their turn. Also I'd highly recommend putting a Link Spider in your extra deck, so you can make a Zebufera or Duralume with the Nibiru Token. You'd do Token > Link Spider > Zebu/Dura depending on what you need.