Your age shouldn’t be much of a bother to French recruiters right now, as in the UK French transport fiirms are in desperate need of drivers, and many use several agencies to try to attract new staff. I’ve worked for three different firms already this year, each one offered a full-time contract from the start, and I’ve been called by another dozen agencies, so there’s work out there if you want it.
Try www.leboncoin.fr or pole-emploi and you’ll see that there are literally hundreds of driving jobs in each region.
Bon courage