No, I'm sorry, you can't use a Chromecast device that way.
All Chromecast devices require a network with full internet access at all times.
You can try using an HDMI cable from your phone/tablet instead.
Just checking in to make sure that you've seen our responses. Please let me know if you have other questions or concerns as I will be locking this in 24 hours if I won't hear back from you again. Feel free to start a new thread and we'll be happy to help.
I appreciate the help, Jeran.