Of course, everyone is concerned about employment. The two schools you mentioned are very good law schools in France, and the threshold for the French is very high. But for a foreigner like you, it's hard to get in and out, let alone achieve your goal. The law major requires a person's language ability, social experience and family background. Many young people you mentioned can't find jobs after graduation. I think they are lacking in these aspects.
For yourself, how long have you been learning French? Is it hard enough? How many social networks do you have in France to find a job? If not a lot, how can I attract people to hire you? I have been in France for so many years, and I am still very confused about the legal provisions. France is perhaps the most complete and complex country in the world. One more thing, I think you should have some work experience, but can your college education and work experience match the curriculum of these schools? If not, can you spend a lot of time and energy to supplement your knowledge from the lower grades?
Then, as far as I know, the salaries of legal workers in French-speaking countries are generally not as good as those in English-speaking countries. There is a simple reason. The customer's spending power determines it. This should also be taken into account.
Finally, all the law students are in the university. I have never heard of grande ecole, but the purpose is public.
I hope the above experience can help you.