To save time I reinstalled
What did you reinstall?
Also do you use external disk or not?
If not it can be just out of disk space if you keep uploading files into apps on the same disk it will kill the main OS eventually.
Can you ssh to the device and run this command:
If you do know what is it then you may want to do a factory reset of the main disk by following this procedure (assuming you have your backups and data saved to another disk as it will erase everything on your main disk):