Apple's Files app is its mobile version of iCloud Drive - similar to Dropbox or Google Drive - but with a difference - photos, pdf documents, and html web pages can be stored in customized Folders and sub-Folders - and viewed within Tidy Health. If Files app is full, then data is encrypted and moved to Apple’s remote iCloud servers.
Your Files manager is Tidy Files. Your uploads are organized and integrated inside pre-set galleries - Documents / X-rays / Labs - so you can quickly find what you are seeking. Whenever you add a File in another section (such as Vaccinations), a duplicate is saved in one of the Tidy Files galleries.
To add File -
Tap + > Files > Browse > Storage Location of choice > Edit
To create new Folder - swipe down on Folder menu -
Files > Browse > tap folder icon > Add New Folder > Open > Save
To create sub-Folders -
Files > Browse > Open Folder > Add sub-Folder > Open > Save
To save html Web pages on device -
Open web page > tap Share icon > Save to Files > Name File > Add File
To restore deleted files on Mac - if less than 30 days -
Go to iCloud.com > Settings > Advanced > Restore Files
To restore deleted files on Mac - if more than 30 days -
Go to Finder > iCloud Drive > Time Machine > Find File > Restore