Overheating: Nonstick pans are designed to be used at medium heat. If you overheat the pan, the coating can become damaged, leading to sticking.

Using metal utensils: Metal utensils can scratch the nonstick coating, making it more likely for food to stick. Use wooden or plastic utensils instead.

Not enough oil: Nonstick pans require a small amount of oil to prevent food from sticking. If you don't use enough oil, food can stick even if the pan is not damaged.

Leaving food in the pan for too long: If you leave food in the pan for too long, it can start to stick, even if you've used enough oil. Cook food for the recommended amount of time and remove it from the pan promptly.

Not cleaning the pan properly: If you don't clean the pan properly, food residue can build up and cause sticking. Wash the pan with hot soapy water after each use and dry it thoroughly.

Using harsh cleaning products: Harsh cleaning products can damage the nonstick coating. Use a mild dishwashing liquid and avoid using abrasive scrubbers.

Using the pan for unintended purposes: Nonstick pans are not designed for certain cooking tasks, such as frying or searing. Using a nonstick pan for these tasks can damage the coating and lead to sticking.

If you're having trouble with food sticking to your nonstick frying pan, try adjusting your cooking temperature, using less metal utensils, adding more oil, cooking food for less time, cleaning the pan properly, avoiding harsh cleaning products, or using the pan for the intended purpose.