Nissan X-Trail 2.2 Diesel T30 Cold Start Problem

I recorded this video, because my car goes on very high idle, when it comes to cold start, below ~10°C. I replaced literally everything in the fuel system (not only because of this), and I tried lots of things, but it remained the same. I still don&know if it&normal, or not, because I have never seen any diesel car acting like this before. If you have a diesel T30 Nissan, please leave a comment about how your car acts below 10°C (or colder).