The presence of luck-based mechanics in a strategy game can be both a blessing and a massive frustration.

However, it still exists in subtle ways that can completely alter the outcome of a very close match.
Initial Deck Shuffling
If your opponent rushes the bridge and all your cheap defensive counters are at the bottom of your deck, you lose the tower.

Once the initial hand is played, the rotation becomes fixed, and pure skill and memory take over.
Always include at least two cheap defensive options.Try to fix your rotation safely.Move on to the next match quickly. Troop Movement Quirks
Sometimes a unit will retarget unexpectedly due to a micro-movement by another troop, completely ruining your defensive setup.

Leaving a slight margin for error in your defensive placements is the best way to handle AI unpredictability.
Game StyleLevel of LuckAuto-ChessLuck is the primary factor in individual matchesStandard Tower RushHighly skill-dependent after the first 30 seconds The Mental Game
Getting angry at a bad starting hand only causes you to make further mistakes and lose the match entirely.

If you are stuck in a lower arena, it is because of your fundamental mechanics, not the random number generator.