You don’t sound like a very techy person.
I suggest start learning how to use google. A lot of these questions are very simple and a google search will yield lots of answers quickly.
Does the end of the cable (the plug where you insert it into A118C) look the same? If not then you cannot force it in or else you will damage it. A simple google search will show you different types of USB.
You will need to supply A118C with power in order to power it. Use the correct USB and plug it into a charger. What memory card does A118C uses? You can easily search on ebay, amazon, etc. on what the card reader you need and plug it into your computer to view it.
I am not understanding your last two questions.
“Also what type of memory card reader do I need to play and show the video from my phone?”
I thought you’ve already bought a lightning adaptor to view the videos in your phone? Why do you need another card ready?