There is no problem with the output from iwconfig that you posted. This is what you will get for a wifi that is not connected to the network. I see the exact
same output if my wifi is not connected to the network.
I do not expect the wifi dongle to be faulty but if you want to check it if you have a Windows machine plug it into that and see what happens.
Actually that reminds me of an odd problem I had quite a long time ago. I had a wifi that would not scan or connect, also an rtl8188cus device, so I plugged it into my Windows laptop to check it was OK. It connected to the network and worked OK. I then plugged it back into the Pi and it immediately started to work with the Pi. Why it suddenly started to work with the Pi I'm not sure but it is possible the firmware loaded by the Pi may have been corrupted or something like that and plugging it into the Windows machine reset it and cleaned up the wifi dongle set up.
In your original post you asked about connecting to a WPA2 Enterprise network with login name and password. I'm not sure how to do this,so do you have any other network you can connect to that is not Enterprise? It would make checking the wifi a little easier.
There are some posts on the forum about connecting to enterprise networks and it looks like /etc/wpa_supplicant/wpa_supplicant.conf needs setting something like
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Most examples show additional lines in the file but they may not be require as connecting to a normal WPA2 network can be done with the file like this
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again with all the additional lines removed. I can connect to my networks using this format.
First, however, you need to get your wifi to scan. It should do with the files you have at the moment so I would suggest if you do have a Windows machine you can try the wifi in that machine to make sure it does work and then put it back in your Pi and then see how it behaves.