Did you keep your whole team position for all stages? Or did you finish the fight with your ninjas being serious damaged?
Survival trial AI is dumb, they will keep doing the same thing over again so all you need is to counter it with your position, talent and tactis. When the fight go wrong and your ninja take too much damage, hit retreat and rethink your strategy. Your goal will be pass all the stages with minium hp lost before 11, 12th stage.

Few tips I can give you :
1. If they use Sasuke, let him cast his barrier because most people put Sasuke behind and he is very squishy so it's super ez for you to kill him in round 2 before he can hit kirin.
2. Neji is your best friend when enemy is faster than you.
3. If enemy use Guy, 100% Guy will use his mystery in 2nd so target both him and any ninja with 20 chakra mystery on round 2.
4. Try to use Shika, Ino, Naruto, Kakashi to do survival. That team need a bit of practice, but when you know how to use it and know your enemy, it's easy to pass survival or at least it will help you go to 11th stage without have to use ur main team.

How can someone who don't know about initiative rank 6 and never fail survival since server started? Also the reason I'm rank 6 is because I didn't online for 2 days, that's why the top player are 24 stages ahead of me.