I need your advice on my application

I have made a wonderful application and I am very proud of myself, but I have currently completed the design stage and I have a fear that it will not be successful. Simply put, the application is similar to the idea of ​​Airbnb and different in details and has included several features, but I have not linked the procedures and details until this moment due to the bad calendar on the platform. Do you have any advice you can offer? for me ?