Here are the tip 2 tips I can give you based on experience:

1. Never go into auto-pilot mode. Never get lost in your thoughts. Always be present.

2. Never, ever ride behind a car at the same speed of the car.

I was super tired after a 5h ride through hills and was basically in auto-pilot mode going down a slightly inclined street. The car in front of me decided to hit the breaks out of nowhere because they saw another car do a strange movement. Cars break so quickly compared to bikes. I used both breaks to avoid hitting the car, but due to slope the back tire was raised. The bike became like a slingshot and I was shot against the concrete. I was fucked up for 3 months. Broken ribs, broken fingers and fucked elbows. My helmet saved my like because after my hands hit the concrete, my head followed

Always be present. Think 3 steps ahead.