To act as a guarantor if no one else can do this for you, please check for Visale, a free guarantor system (in French): www.visale.fr.
VISALE is a no-cost solution to the problem of student security deposits. With VISALE, students find housing more quickly and property owners are assured that rent will be paid.
Two of SKEMA partners provide also answers to SKEMA students’ guarantor issue:
and GarantMe (https://app.garantme.fr/fr/school-skema) and Smartgarant : www.smart-garant.com/en
https://students.skema.edu/international-internationalstudent-housingsubsidies/