If you want to win the game every time, keep the below-given steps in your mind.
Make Sure You're Soldiers Aren't Too Cooped Up in Their Forts.
There's A Few Ways to Handle Large Groups of Enemies.
Spruce Up Your Ranged Attackers ASAP.
Keep Your Barracks Strong.
Knock Down Those Heavily-Armored Enemies With Your Magical Towers.
Do Right By Your Barracks By Doubling Up and Upgrading Them ASAP.
Following the kingdom rush guide and tips, you can win the game, and there is less chance to lose it.