Thank you all for your kind answers.
I know that what can be thought about my situation is "look at this poor stupid guy, he spent thousands of euros for a training and now he's going back to the beginning over again"
The reality is, I was not willing to pay for a Line Training, and the few interviews I had previously were nonsense, with "airlines" that i've never seen again after the interview in any media or website...I'm not that lucky, and I'm struggling to find my first opportunity as a pilot (meanwhile working in aviation related jobs). So the only idea to be able to start over again with an airline doing again the CPL and having a long term career with them is, right now, an amazing idea to me...
Thank you very much again!