GNU/Linux Ubuntu 18.04 Realtek rtl8723be Setup Guide
Hi! The linked Tutorial Shows You Step-by-Step How to Download and Install Realtek rtl8723be WiFi/Bluetooth Driver in Ubuntu 18.04 Bionic LTS GNU/Linux.
And the Realtek rtl8723be Ubuntu 18.04 Driver Installation is Quick & Easy, involving at most the execution of some Basic Shell Commands.
Installing Realtek rtl8723be Driver on Ubuntu 18.04
Ubuntu Realtek rtl8723be Driver Install