Video-sharing site Rumble Inc. accused Google in a lawsuit of taking advantage of its search engine and mobile operating system to enhance its YouTube video service over rivals, the latest allegation of anticompetitive conduct against the Alphabet Inc. unit.Toronto-based Rumble, which has become popular among conservative experts, on Monday filed an antitrust suit in federal court in California proclaiming that Google is “unfairly rigging its search algorithms” to place YouTube above Rumble in its search results. Rumble said Google’s behavior cost it substantial numbers of viewers and advertising dollars. The lawsuit also argues that Google’s deals to pre-install a YouTube app on mobile devices running Google’s Android operating system have unreasonably stripped Rumble of viewers.Rumble’s lawsuit cites the discovery of a Wall Street Journal Investigation from July that found Google’s search results gave a preference to YouTube links over those from video competitors. In a series of tests, the Journal discovered that search results in a vast majority of cases featured Youtube videos ahead of the same or very similar versions of the videos available on competitor sites.