You can follow these tips to improve your food delivery app:
Validate your food delivery idea before building the app to ensure you don’t create a clone of already existing apps.
Focus on offering a unique experience with the theme and elements of your food delivery app.
Carefully choose your target audience. You can’t cater to everyone and hope to build a unique mobile app.
Research existing mobile apps but don’t let them influence your vision. It should be original and unique.