MacBook 2017 (USB-C) to Apple Cinema Display 30"
When selecting an adapter, you have to know what sources you are going from to what you are going to.  One important thing to keep in mind is that you want to limit the number of conversions/connections you make; more conversions = less reliability.

The 2017 MacBook has just a single USB-C port.  However, it supports the following:


  
  Charging
  USB 3.1 Gen 1 (up to 5 Gbps)
  Native DisplayPort 1.2 video output
  VGA output using USB-C VGA Multiport Adapter (sold separately)
  HDMI video output using USB-C Digital AV Multiport Adapter (sold separately)
  


(Emphasis mine)

The Apple Cinema Display has a Dual Link DVI port.  

So, you need to go from USB-C DisplayPort to DualLink DVI Adapter like the Tripp-Lite U444-003-D (The product must indicate that it supports Dual-Link DVI or it won't work)

Keep in mind, that this particular display is getting long-in-the-tooth so to speak and it will become increasingly difficult to find newer interfaces for older, unsupported monitors that has a small market share (Everybody had DVI, only a few could afford DL-DVI).