Peertube

It's satisfying building your own at the length you need.

I learned to do this when I became the defacto IT guy for a small business 20 years ago. I also wired my house. My success rate on cables is 100%. It's not hard, but it does take extreme care. You just need to triple check the wire order and position before you crimp it.

I've always done 568A, and memorized green-stripe-green, orange-stripe-blue, blue-stripe-orange, brown-stripe-brown. I repeat that to myself over and over as I'm making the cable, and checking carefully.