2012 C300 M272 – Misfire on Cyl 4/6 → Swapped Coils → Now Cranks But Won’t Start

Hey everyone. My Mercedes m272 2012 c300 had two misfires in cyl 4 & 6. I swapped coils around and Just had a misfire on startup with cyl 4 still. After switching the coils back to their original spots,the car no longer starts up.. just cranks? Rpms arent rising or anything.. Any help? I tried swapping coils back and nothing.."