Engine Failure Warning, ESC & Check Anti-Pollution

My Megane RS 265 had a few warning lights on the dashboard. I had a diagnostic check done by the RAC. The coil packs checked and they’re functioning fine, possibly the fuel injectors but not 100% confirmed.
Warning for “Engine Failure Warning”, “ESC” and “Check Pollution System”.

Anyone else had this issue that can advise on what the cause of the issue was and roughly how much repairs were for their car.