I have heard from several developers that the reason there are not any 3rd party recovery or repair tools for APFS is because Apple will not release the necessary information about APFS to allow them to develop them. My view on this it is just more evidence of Apples migration towards totally closed systems effecting placing a firewall around Apple users, using the excuse to protect them but in reality, it seems to be a paradigm to maximize their profits by isolating the from their competitors. The end result is that it is getting more and more difficult for Apple users to integrate and exchange information with other systems along making it significantly more expensive to use Apple products. Such is the result of Apples paradigm shift from the putting profits first instead of the customer/user experience which seems to have happened with the tragic loss of Steve Jobs. The only workaround I have found to resolve such issues is to erase and reinstall macOS and restore the User and App files from backups.
According to some developers’ comments, APFS also has a number hidden issues/bugs that can result in drive corruption that cannot be repaired with Disk Utility. My solution to this is keeping my user created data on a separate drive with HFS (no macOS on it), and using aliases on my primary drive to access it. Unfortunately, this cannot be done with a number of Apple Apps such as Notes, Mail, Contacts, Reminders, Messages and remote/cloud services as they reside in the user library and are often integrated with iCloud. I also believe that one of the reasons for this is to coerce users to purchase more iCloud space-i.e. profits. This is why I have migrated to using some other products for those items that can take up a lot of iCloud space such as Notes, and reminders. For these I use MS OneNote and ToDo. As it turns out ToDo is much more powerful than Reminders and also automatically syncs to it. It also supports Alexa which allows me to add tasks to my ToDo list using Alexa Auto in my car while driving and retrieving them later either in ToDo or Reminders.
Every so often I additionally make backups of my complete User Folder and Applications Folder to another drive. This can be challenging to do if you include user libraries as some of the folders, most related to cloud servers, are protected in such a way that doesn’t allow Finder to copy them. So, what I land up doing when making such backups is to separately copy the contents of my primary user library contents separatly to the backup drive minus the cloud folders in it. Since the contents are on a cloud server, they actually do not need to be backed up locally.
One of the issues I have found with Ventura is that Apple now prevents you from accessing the System partition from Disk Utility. This means it seems no longer possible with a corrupted System to boot to Recovery; erase the System partition; and reinstall MacOS into it preserving the data on the drive. My experience is you can reinstall macOS onto the drive again but it now goes into the data partition and you lose the former System partition space unless you backup, and erase the drive first. Thís might have been some glitch or failure on my part to do this correctly as I have never found any documentation on doing this and Apple Support is of no assistance in doing this as they claim it is beyond the level of support that they can offer.