How do I disable the wireless capability on a Huawei B593 Smart Hub to only use direct wired

Did you insert a SIM card? This page seems to have some helpful information:

https://forum.huawei.com/enterprise/en/huawei-b593-4g-lte-cpe-router-simple-operation-guide/thread/621172-100305

1. Verify that your Samsung Smart TV is connected to the
Internet using a wireless or wired connection. ...
2. Power on your television and select "Smart Hub" from
the main menu.
3. Select "Apps," then scroll to and select "Samsung Apps"
using your remote control.

You mention two separate issues, WiFi and smart hub. As you know Samsung built in manual is the worst idea ever. There is no picture of the complete rear panel connection for example.
If the smart hub is the actual WiFi antenna then if your system doesn't recognize Smart Hub then you have a bad smart hub.
to test smart hub plug something into hub ( DVD HDMI, video game) If your remote has smart hub button press and see what appears. Otherwise select source on remote see if your attached item appears. (That would indicate smart hub does talk to TV)!
Since you can access your network when hard wired your network password is stored.
Once you have verified Smart Hub is functional then work on WiFi.
i will say my Samsung is 3 ft from my router and hard wired for better streaming speed.
I use Bluetooth access to share photos from IPads.
I would leave TV hard wired.

Appears that when you disable the wired you default to the wireless.

No, never.

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what is the question? are you wanting to connect wirelessly with this phone? if so this phone is not wi-fi capable

First thing, Does your printer have a wireless facility built in? If not it has to be connected to the hub with ethernet.
Normally setting up a wireless printer involves using cables until the set-up is complete. It's nothing to do with the router but all to do with the printer.
Best thing is to go through the manual.

you are better off getting a refund and buying a PCI wireless card and installing that instead ( linksys or netgear or something along those lines )

You should be able to buy a USB Wireless hub which you then connect to your printer using a USB cable.

The hub will come with software and instructions that then allow your laptop/PC to connect and use the hub as if it was a wired unit.

Belkin do something like this so that's probably a good start.