To address the issue of daily wallpapers in Microsoft Edge, you can customize the new tab page settings. Although there may not be a direct option to completely remove the daily wallpapers, you can adjust the appearance by selecting the customize button on the new tab page. This allows you to set a specific background image instead of using the daily changing wallpapers.
If you're unable to find the option to disable the daily wallpapers, it could be due to the version of Microsoft Edge you are using or any organizational policies that might be in place if you are using a work-managed device. In such cases, checking with your IT department may provide additional insights into any restrictions that could be affecting your settings.