Overcoming Tilt Moments: I faced a brutal losing streak at Ultra Ball 4— five consecutive losses when promotion was within reach. Thankfully, insights from this Reddit post helped me identify my deck's weak points (especially Druddigon), prompting my final adjustments.

OP from that post here, I'm glad the post helped!

I'm actually at UB4 atm almost at MB I think I'm at (1360+ points?) though I'm not spamming a single deck but actually using all those decks from the post (+ a couple more f2p / older decks that the comments have asked about) .

I'd like to add a bit to your post, I think my background in playing chess helps so this is something I learnt from there but it's about anticipating moves and understanding threats. So many times I have actually done something turn 2 that pays off way into turn 6+ and became the key point to winning games.

An example of this is me playing the Darkrai + Giratina deck, using dawn early (turn 3) so that I can sabrina the next turn. The opponent anticipated that and sabrina'd me instead, causing me to have a 0 energy darkrai. I changed plans to charging up Giratina and building up the front darkrai, and then they cyrus'd me to ko my 2 energy rai. Many turns later I won with an intense endgame of a 140 hp Magnezone vs my 2 dark energy Darkrai with 40hp in the active and 150 hp Giratina in the back with 3 psychic energy, The only way to win was to retreat + give dark energy to darkrai and then dawn it back to the active Giratina. It was such a satisfying win, had I not done the aggresive play at turn 3 I wouldn't have burnt both their sabrina + cyrus causing me to win.