From the report
From my perspective and based upon the below findings
The sudden Shut Down are attributed to the Combination of Failed Battery and Lack of Empt Space on the Internal Drive
Battery failure - Your battery is reporting that it needs to be serviced.
Battery: Health = Service Battery - Cycle count = 1364
Low disk space - This computer is running critically low on free hard drive space.
disk0 - APPLE SSD AP0256M 251.00 GB (Solid State - TRIM: Yes)
Size: 250.69 GB
Free: 14.14 GB
Available: 14.86 GB
From another contributor @etresoft regarding Free Space and Available Space
Free vs available disk space huge differe… - Apple Community
Quote >> “ The "available" storage is the amount of used storage that the operating system could automatically delete if it felt that it was really necessary. The "free" storage is the amount that you can actually use for something.
There are system processes that run in the background and automatically delete some of the "available" storage and convert it to "free". If you completely run out of storage, then those system processes will try a little harder. When you "delete" files you are just hinting to the operating system that you don't need those files anymore. The operating system will eventually remove them, but on its own schedule.
Certain tools will allow you to force the issue and manually clean up some of this storage and manually delete local snapshots. But that is only temporary. " << End Quote