Twingo 1 1.2 16V 75 hp does not start

Hello guys, now for the 100th time the topic that the little one doesn’t start. It’s a Twingo 1 1.2 with 75 hp. The engine just went off during the ride and then no more. I have changed the highly suspicious OT sensor so far and indeed with a new one from Bosch. I also changed the spark plugs. I have not noticed any damage on the cable and plug from the OT dealer. Can you test anything with the multimeter? Battery has already been charged a dozen times, he orgulates and The immobilizer works exactly as it is in the manual. It flashes until you turn on the ignition, then the red point appears and goes out after a few seconds. Unfortunately, we only have the one key to exclude it completely. Otherwise, nothing is noticeable from the indicators. The petrol pump also runs and on the exhaust it smells like I checked all the fuses. I also removed all the candles and held them against the ground when starting, spark is everywhere and the candles were drunk. This clearly points to the OT dealer because he gets gasoline and ignites, but the ignition time does not fit and therefore he drains. I just can’t get any further here and my friend urgently needs the car to get to work. Can you tell me from my description, What else can I test? Thank you very much!