How do I get rid of the ad?

I'm in possession of a Huawei mate 10 pro and recently I get the advertising I'm doing in every application. Even in standby comes this advertising. It's always different. Mostly Wish advertising. The advertising comes at regular intervals. The app that shows ads is sponsored (I've seen it in the task bar.) But nowhere I find this app, how do I get rid of this damn ads? Oh yes, I really get these ads on EVERY application (hiring, music, etc.).

I just looked at my Huawei P20 Lite myself but did not find anything to stop it. I would advise you to ask a cell phone seller.

That's the price for getting free versions of apps and not buying the full versions. Somehow they want to be financed. Or do you have on dubious pages charged full versions illegally charged free? Who knows what to load down with such actions. A 100th € expensive smartphone in the bag, but then too stingy for apps. I appreciate that. Think about what you installed when the problems started? That then possibly uninstall. If nothing else helps, a hard reset always helps. (Save important data before)