You can easily add new files to your Nextcloud web storage through the file management view. By clicking on the "+" button in the image, you will see options for adding new files:
Upload file: Upload a file from your computer to Nextcloud.
New folder: Create a new folder.
New text document: Create a new text file.
Once a file is created or uploaded to Nextcloud, you can modify its properties. In the file management view, click on the three-dot icon next to the desired file to access a menu with various options:
Add to favorites: Add the file to your favorites list.
Details: Open a detailed view showing the file's properties and information.
Rename: Change the file's name.
Move or copy: Move or copy the file to another location within Nextcloud, such as a different folder.
Download: Download the file to your computer.
Delete file: Move the file to the Nextcloud trash bin for deletion.
For more instructions, you can refer to the official Nextcloud documentation available at: https://docs.nextcloud.com/server/stable/user_manual/en/index.html