Hi and welcome to the forum.

As I suggested to another poster looking for rental information, start by googling the website for a publication called Particulier a particulier - to find rentals where you can go directly through the landlord without the agency fee. (The link to the site is somewhere in the archives here on the forum - I'm working remotely at the moment and can't really look it up conveniently.)

Finding a rental will be much much easier if your French is adequate for the job of meeting with landlords and/or agents. Trying to do this in English is tricky, as it's kind of open season on Brits looking to buy or rent in the south of France.
Cheers,
Bev