I said it was your fault for being alone and being caught out. You replied you weren't alone, but rather Camille's ultimate had knocked away your team.
If you are alone, you deserve to die. End of story. If you're not alone, hopefully, your team is intelligent enough to simply re-enter the coliseum and either harass her out or protect you for 4 seconds.
Camille can't kill you within the second between the knock back and the time it's take to re-enter the area without going full glass cannon AD so she could do Q1-regular non damage boosted Q2 to kill you quickly. At which point she'd be squishy enough to die in just about one combo from anyone anyways.