First of all thanks for your reply and help.
1) I use a KN filter, I bought it recently, according to the specification it should help reduce fuel consumption
2) I went on a long trip and the consumption was significantly lower, 6l/100km, but as far as I understand the consumption is disappointing for shorter distances (unfortunately that's what I do the most), an especially if the air conditioner is in use.
3) I got obdeleven next gen, but I don't know how to look at these parameters with it for DPF.
4) I poured the additive, I felt minimal improvements (0.5l/100), currently my consumption is 10l/100km
5) I did that with obd11 and everything is ok, it doesn't report any errors
6) I bought new tires, I did the alignment of the wheels, ryre pressure is ok.