I've been using this PC for three years almost, four now, and this HDD is mainly just used for games along my Unity and Blender projects. Also a few months ago I ran a virtual machine through Oracle VirtualBox VM, that might be the cause for the ridiculous amount of reallocated sectors but I honestly don't know anything.
The Reallocated Sector Count is telling you that 9400 (=0x24B8) bad sectors have been replaced with spares.
The normalised value of this attribute has dropped from 100 to 97. This is a health score. When this number falls to 10 (the threshold value), the drive will be deemed to be unserviceable. However, this is a grossly dishonest approach by Seagate, IMHO. That's because a drop in the health score from 100 to 10 requires a reallocated sector count of ...
9400 / 3 x 90 = 282000
Even if this number represents logical sectors, that still equates to 35250 physical sectors (1 physical sector = 8 logical sectors).