You don't realize that you don't need drivers in linux... that's how great that is.
All the drivers - except for hardware that doesn't want to be supported, like nVidia graphics drivers and some older wi-fi chips - are built into the Linux kernel. If your hardware is very new, Linux distros that are based on older kernels, like Ubuntu, sometimes don't work well with it. The ONLY way to solve this is to use a more modern kernel, which in Ubuntu's case means a later version of Ubuntu.
The normal way to install software on linux (no drivers, software), is through the distro's GUI package manager or software center.
The command line is a tool that is much appreciated by people that are familiar with linux and want to get things done fast or get more efficient and precise control, but it's not needed in most distros.
As stated before, NEVER EVER download software or "drivers" from a website in Linux, it's almost always a scam!!!!!!!!!!!!!! Downloading some Internet site crap and installing it onto a computer, is something that is only found in Windows, it's not normal, and it's not secure. The normal way, as used by almost all operating systems except Windows, is to download software from an official repository.
Don't think Windows when you use Linux, think Android, that's a Linux distro. Would you download software from just some random website on your Android device, or would you got to the Playstore, which is the official repository for Android?
Oh and about the connection being "lower"... dude... that's just a graphic representation that means absolutely nothing... most probably your real network speeds over wi-fi in linux are higher, even if the indicator shows a lower reading... if it works, it works, why would you need to run some script from a website, that's just a way to jeopardize your system...