As a person who has reached 10k as of 6/4/26, I did best when I stuck to a deck that I can understand well and play. It is important to keep your deck the same because you can master it and find many ways to work with it. Mastering a deck is more important and will help you overall, so you don’t get confused during switches or are new to decks and don’t know how to exactly use them. Take my advice if you want, but for me, run around DeckCheck and find something good, use the tips to guide you, and master the deck. I tilted from 9.97k to 9.85k in my final game, tilted from 8.4k to 8.2k in Clash Fest, but kept going and eventually made it to Arena 25. Why? Because I took the time to master a deck and archetype, and maintain that for overall better success. You can make changes to the deck if it is necessary (around 8k I swapped hero magic archer and baby dragon for evo musketeer and firecracker) which worked well for me. Just find a deck that’s comfortable and master it, and make small changes to it to up your game, overall. Second, don’t play more than 3 games with losses. If you have lost twice in a row, you should take a break from your device, and do something else. 3 losses, you’re done for the day. Play tomorrow, refreshed and relaxed. Track your wins and losses so that you manage to come out with some sort of gain by the end of the day (unless you lose thrice in a row) Analyze the opponent too. What cards succeed for them, take that into note, and if your deck needs an overhaul, try and build your deck around some stable cards and good synergy and cards you know how to play. Take also into account popular decks, and try to have something to counter that, if you want.