GNU/Linux Ubuntu 23.10 Installing Realtek rtl8192CU Driver Guide
Hi! The linked Tutorial shows you Step-by-Step How to Install Realtek rtl8192CU Wireless Driver for Ubuntu 23.10 Mantic GNU/Linux.
And the Realtek rtl8192CU Ubuntu 23.10 Driver is already bundled in the Latest Linux Kernels.
Finally, if you have Different Card then See this Other Guide: How to Install Realtek Wifi Drivers on Ubuntu.