trying to copy analog tapes into Mac Pro using Final Cut or anything that will work.

Look for "ClearClick Video to Digital Converter 3.0" on Amazon. I've recently used it to successfully capture VHS and Hi-8 tapes to USB flash drive then imported files into FCP to clean up and edit a bit. This version has a large LCD screen so you can see what you're capturing. VHS is via RCA jacks and Hi-8 can offer S-Video for (maybe) a little better quality. An hour of tape results in a 1.5 to 2gb mp4 file. Without a computer you can view the captured files via an HDMI connection to a TV. (I set it to 640x480 to get it the proper aspect ratio for the old tapes.)

Analogue tapes need to be digitised. You need a device between your player and the computer to do this. Something like a Canopus ADVC device.

I have used this device to digitize DV video tapes into FCP: https://www.amazon.com/dp/B07K3FN5MR?ref=nb_sb_ss_w_as-reorder-t1_k0_1_6&amp=&crid=3OCX7EXZ3ZP5D&amp=&sprefix=elgato. It works well is easy to use, and gives excellent results.

Analog tape has to go through a box or camera that will digitize it.

The above link shows a device with HDMI input that may not suit your needs.

Check first if you require RCA connectors.