You have the right to come here for three months. After that, in theory, if you are not self-sustaining, they can ask you to leave. As in the UK with EU citizens, they don't do that. However, with Brexit, we are being advised to apply for a Carte de Sejour, especially as the negotiations are going so badly, and you would have to prove that you are self-supporting either with income or savings. In Limousin, in the countryside, there is almost no employment possibility - except that some have managed to get jobs driving school buses. How is your French? People come here and make their own work - building, gardening, helping with gites, buying B&B/gites or building them, etc. In the cities, it might be different. Connect with the UK community in France through Facebook pages like RIFT for further information and guidance.