Lack of ipv4 Address(es) and I apparently disabled my Ethernet...

It all started just that little amount of time ago, I was failing horribly at configuring OpenVPN and decided to reboot. Upon rebooting, I couldn't access the internet. I figured it was my router since it's given trouble in the past, even on Windows. However, after rebooting the router and confirming internet access with a cellphone, I failed to access the internet from my machine. After doing vague amounts of research, I decided to pull up information via GUI and discovered that I had ipv6 addresses, but not ipv4 addresses. Which at the very least allowed me to migrate from the "linux no wifi" style searching to the seemingly less ridiculous "Ipv4 how to enable linux" or perhaps it's seemingly more attractive cousin "how to reset networking config Ubuntu" (Keep in mind I was more thorough with my searches). After reading a fair amount of media and playing with config files in /etc for about a half hour in total like a fiddle, I reboot and now my ethernet card is disabled. I'm currently typing this from a Live Debian USB. My system is running Ubuntu 18.04.2 LTS.