@isabellerossignol our parish council fanny about with planning applications mainly - and the county council promptly ignores their recommendations usually!
They work on the neighbourhood plan, tackle local issues like speeding in the villages, bus services, improve amenities. They are the people we approach first about any and all local issues in theory.
Ours are mainly fundraising for the hall roof and trying to improve and protect green spaces. My step-MIL is chair of ours.
Ours serves 5 villages in the parish so quite a large area.