I wanted to switch over to Ubuntu because I don't really fancy Windows. But as the careful coward I am I decided to install Ubuntu 20.04 on a virtual machine on a scrap computer, before I attempt on my Main one. There was no problem at all, everything worked. So I installed it as the main and only OS on that same scrap computer, still, everything worked, Wi-Fi loaded up in the initial setup and all. So I thought "Hey, I'm good to go" and installed Ubuntu 20.04 on my Main HP computer, only to realize that the Wi-Fi doesn't work.
I have searched for many hours now and the most I can find doesn't really help me since most people already have all those needed packages downloaded and installed. I've tried to follow step-by-step guides by other people here but can't really install or do anything. I have no ethernet-wired-connection so that's not an option either. I do know that my wireless network thingy is called RTL8821CE, which from what I've read has no "official" drivers on Ubuntu, and none over like Ubuntu 18.04... Also can't do that github clone thing. All forums and all webpages says to do different stuff and now I'm just confused as to which commands to which things.
So what do you suggest? Can I download every separate package from github and packages.ubuntu.com and transfer them via USB? Is it possible at all to connect to Wi-Fi with the RTL8821CE on Ubuntu 20.04 or do I need to downgrade to 18.04? Is it even possible to downgrade?