Lightroom Classic: Catalog corruption

After my computer's SSD started failing recently, I tried to salvage my catalog file and copied it to another computer. However, when I try to import the file in Lightroom, I get an error message which states that the catalog is corrupt and can not be repaired.
I have already tried several suggestions I found on the internet, like repairing the file using sqlite3, but to no avail. Also, the catalog backups appear to have been corrupted as well, since I cannot unzip them.
I would appreciate any help that prevents my catalog from being lost entirely. Thanks in advance.