Le Point du FLE (https://www.lepointdufle.net) is a free, non-commercial educational portal that aggregates and organizes thousands of online resources for teaching and learning French. It was created and is maintained by Pierre Boccon , a French teacher.
If you're looking for a specific type of exercise (e.g., “subjunctive exercises B1” or “listening A2 food”), this is often the fastest and most effective place to find it. le point du fle