How much have you got in savings? Would you have enough to try a job search in France?

Given that you have an MBA / bac+5, the APEC site could have another offer that suits you: https://www.apec.fr/parcourir-les-emplois.html?query=fonctions_101806

While I’m not in the financial field try pôle emploi in case there are roles you would be interested in.

I’m so sorry to hear you’re in this situation, hope things straighten out soon