Find below-mentioned points to Add Media Files.
Step (1) − Navigate to Media > Add New section from your wp-admin panel.
Step (2) − A new window opens. Click on Select Files button to select the files from your computer or local storage.
Step (3) – Select Media files whatever you like to upload and Click on Open button as shown in screenshot:
Step (4) – After uploading you can view the list of media files you uploaded.