If you want to be paid to fly, in general, it is required that you hold a commercial license, and fly in an "operating certificate" environment, even for general aviation airplanes. There seem to be a few exceptions creeping into this rule in Europe, but their spirit is cost sharing, rather than actually funding flying. The cost sharing approach to flying really should not be considered a path to having your flying paid for. Perhaps you can cost share the occasional flight incidental to your flying it anyway. If you're renting the plane, you will encounter resistance from the provider of the plane for using it for any funded flying, that's really their industry, not yours, as a PPL, and their insurance is not covering you for that.
There are a few jobs for new CPLs in GA flying, including jump pilot, glider tow pilot, and survey flying. It'll take some research to find those jobs, but they are out there, and there's a high turnover, so they come up more frequently, as those pilots move on to other commercial flying jobs.