TaigaXZ Lack of uniqueness can be due to the following factors: You used someone else's file as a base and edited it.
For personal use, edit as much as you like, but for publishing, these should only be your own files.
Another factor: Simple structure. Structure is what your macro consists of. For example, pressing one, two, three, or ten keys in a row. This is a simple file that was likely created by other users long ago.
Neither your delays, which you spend "several hours perfecting," nor other editing processes play a role here.