edX, online universities
EdX is a MOOC system (Massive Open Online Course) created by Harvard and the MIT, just that. There are many courses offered by prestigious universities on a variety of subjects. There are courses in French, but I must admit that English is still preferred.
One can learn from psychology, communication, languages, physics, electronics, computer and many other things.
Basically, all you could learn in a university course is available on a single training site.
Training is free, accessible to all, you learn at your own pace, in your self-training. At the completion of the course you receive a certificate justifying your success. However, I do not think this degree has any kind of value other than the one you made.
Regardless, if the platform appeals to you and you learn what makes you happy, is not that enough?