Welcome to the Forum.
You are not the only model engineer in France. Little by lttle, they will appear; and some may be close to you.
There will always be someone who can answer a question.
Although I don’t own a Proxxon, there will be others on here who do, and can vouch for the accuracy (and give tips on how to get the best from it).
FWIW my advoce is just to become familiar with the machine by just cutting metal, and making small simple tools. In this way you will gain experience and confidence to start making things “for real”
Howard