@OP,
How would I make my own? I see all these descriptors like “cryo treated” & all kinds of other “balanced” & treatments. Seems way above my head.
Here is a link to a cable making thread.
https://www.whatsbestforum.com/threads/how-to-solder-an-illustrated-diy-guide-to-making-your-own-cables.17885/
Re: Cryo treated.
I would leave that alone for the time being.
Re: Balanced.
There are two types of connectors, balanced and unbalanced (RCA).
Google and Wikipedia will help you understand the differences.
Start slowly, and get a grip on the terms and differences. Soon you will know everything. And, if you need help, just ask.
Bob