Sorry to hear about this experience, @Safia12! The setup of a Ring device is designed and intended to be quick and easy via the Ring app, but also securely via the setup button on the Camera. Once it is connected, another setup should not be necessary. As it sounds like this was successfully setup, it should remain connected as long as power and wifi signal is sufficient. Checking your Device Health and RSSI is a great first step in ensuring for an optimal connection. In regards to power, please ensure the standard outlet used to power your Camera is not also controlled by a light switch that is commonly flipped in the home.
These suggestions will help to discover a possible cause and solution, but a more long term solution to prevent this from happening confidently will be best found with our support team. Please give our support team a call at one of the numbers available here. We’re taking additional steps to protect our team and help reduce the spread of COVID-19, so this has resulted in longer than normal wait times. If you are outside of the US, please read our response to COVID-19 here to see how to contact support.
Additionally, if you are interested in more hands on installation assistance, check out our help center article regarding Amazon Home Services. Keep in mind, this service is for installing the Camera and not for troubleshooting. I hope this helps! 