Pre-Game stage
Now that we've covered the rules, the weapons, and the movement, we can start to cover how your games should go. The "Pre-Game" is the stage where people are either still joining the lobby, or the 30 second countdown is starting. Use this time to jump into a high, safe spot. Try to use the slide-jump technique to get somewhere most other people can't. Each spawn has a sort of mini parkour level you can do for fun, but also for safety.
Planning Your Route
After you've found a safe spot, you need to start to plan your route. But this shouldn't be general. You should at the very least account for even the smallest of slopes directly outside of the spawn area, which you should have memorized by now. These slopes can get you speed and away from the zombies. Even the smallest amount of distance between you and the swarm is the difference between life and death in the early game. Do not take planning your route lightly. Use everything you can to your advantage when getting to where you want to go.
Your first stop to consider when planning your route should be somewhere thats:
A) Not going to be visited by many people and
B) Guaranteed to have loot
Getting a gun in the early game lets you gunjump, and gunjumping will save your god damn life. Next, you need to consider if you are going to go for the airdrop or not. 99% of the time, the answer should be yes. That should be all you need to account for before the game has started. Try to reserve calm moments for planning and intense moments for doing.