I don't know about France, but I don't think you are going to find anyone, anywhere, who will hire you as an 'apprentice' engineer; an apprentice blacksmith, maybe. Companies are not really set up to teach you electronics, they expect you to come in with some skills. If you are willing to work for free, you might be able to find something; a lot of companies, at least here in the US, use college students as unpaid interns.
Perhaps you can get into a company based on your networking background, and move into electronics from there.
Good luck.