Random Number Generation, or RNG, is a highly debated topic in almost every competitive video game genre.

In the context of lane-pushing arena battlers, RNG is typically minimized compared to card games or auto-battlers.
Starting Hands and Card Rotation
If your opponent rushes the bridge and all your cheap defensive counters are at the bottom of your deck, you lose the tower.

By ensuring a healthy mix of low-cost cycle cards, they guarantee they will always have some form of defense.
Make the best play available with what you have.Remove the guesswork from the mid-game.Some RNG is healthy for the game. Unit Targeting and Pathfinding
While developers strive to make AI as predictable as possible, the physics engine can occasionally create chaotic results.

To counter this, veterans always place defensive buildings in exactly the same specific tiles to guarantee consistent pulls.
Genre TypeRNG DependencyAuto-ChessLuck is the primary factor in individual matchesStandard Tower RushHighly skill-dependent after the first 30 seconds Accepting Randomness
The most important skill regarding RNG is learning how to control your emotions when luck inevitably turns against you.

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