This reminds of my first experience with Zorin Forum (Wi-fi not detected in HP Pavilion ec1019au - #5 by gmk27)
Problem is very similar - realtek wireless and bluetooth (RTL8852BE) and had no ethernet port.
I finally solved my network problem with the help of @Aravisian & @Mr_Magoo.
What I wanted to say is get the USB tethering to work and from there it is easy.