@assybish The contrast and/or color rendering of the images you uploaded make it really hard to discern the light grey text carrying the Royal notation... in any case, the Royal text is indeed visible in the upper right corners.
You've probably picked up adware in your Opera installation similar to this: https://www.reddit.com/r/antivirus/comments/98qaml/how_do_i_remove_ads_by_royal/
Try checking for something peculiar in your extensions and remove any oddities if found, even to the extent of removing each extension, if that's what it takes. From other reports I've seen, "Royal Raid" can be nasty to remove for some victims (particularly on Android-related systems), depending on how it's caused an infection, so you may end up having to reset the browser or reinstall it.