Hi @André Schiemann,
To avoid duplicate push notifications for multilingual news in SharePoint Online, you can use the SharePoint multilingual feature to create dashboards in more than one language. This article: Set up the Viva Connections experience in a specific language provides detailed steps on how to set up the Viva Connections experience in a specific language other than your organization’s default language. By using this feature, you can ensure that users only receive notifications for the news posts that match their preferred language setting in Microsoft 365.
Also, there doesn't seem to be a setting to disable the push notifications in Viva Connections Mobile for news.
Notifications can't be selectively enabled or disabled, but users can toggle push notifications in Teams mobile for all apps (including Viva Connections) under Settings > Notifications > General Activity > Apps on Teams.
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