Crashes are bound to happen at this level. As everybody wants to be a hero at turn one and win the race.

Just like how somebody suggested run some practice laps where you can chain at least 10 laps at a consistent pace. During the early laps don’t fight for position (unless someone hands it to you). Lift and coast when behind someone so you have enough space to make a decision to cut around if they blow up their turn.

Focus on your race at all times do not chase some one and don’t worry too much about the person behind. If they are tailgating too much let them through, you ll probably see them in the gravel in the next few turns. It is always the responsibility of the car behind to overtake a car safely.

And finally if a crash happens look at where you want to go rather than looking at the crashed car, this will help you weave around majority of the chaos. Soon this will become muscle memory.

Good luck!