Because Turkey suffered defeat in Idlib as she was not expecting it, he had to find a way to justify himself to the Turks.
After the slap in the face following his attack, with dozens of Turkish soldiers who died during it, he wanted to retaliate with bombings but he saw that this was not enough to change the data, since Russia supports Syria.
Therefore in order to pressure the European Union and for the second to help her get out of this situation, he opened its borders.
However, the opening of the borders, and the trafficking of illegal immigrants constituted a failure, because Greece has effectively resisted without Turkey predicting it.
As a result, slowly but surely, Turkey goes through from a defeat at military level, to failure at the level of an asymmetric threat.
Consequently, at this point we ought to highlight the role of the Greek resistance at our borders.
Additionally, while Turkey assumed that it would have some support from Russia, it made the strategic mistake to forget that even during the Soviet Union era, it was always by the side of Syria.