@calili If you are talking about the Opera News app, you need to contact them directly on the app or through their support service, since this forum is only about the browsers.
@deviesh It uses Android or Android TV? Since you said you have installed Opera Mini, I believe it should some modified version of Android and that can be the cause of the issues.
Yep I'd go with an ergonomic or gaming chair. In addition, I'd recommend you to add some easy to do stretching excercised.... they are a real game changer 👍