Had great experience for many years,but I discovered opera had been opening tabs by itself, you are a security flaw, I had not used the web browser for anything but youtube, never clicked on ads, I was on Youtube app and if I do click on ad it will send to a youtube internet ad page in the youtube app. While watching a video in Youtube App fullscree opera was closed and it opened and launched to a QR code. You don't browser extension to provide even further protection like other apps.