How do I update my graphics card drivers? [SOLVED]

[SeaTam]

Hey there, I went onto the Nvidia website to get drivers for my GTX 660 Ti and I downloaded a .run file.
How do I run the .run file? When I double-click it, it just generates lines upon lines of code in my text-editor (xed). I don't think this is right because it takes so long for it to finish (I've never let it finish because of how long it takes and how slow the PC gets when the amount of code gets longer).
If I let it run its course in xed, will it eventually move on to updating the drivers on my computer?
Another thing I tried to do was run the .run file in the terminal but then I just got this "bash: <directory of where the .run file is>: Permission denied" message.

What do I do?

Here's my inxi output:
System:
Kernel: 5.4.0-91-generic x86_64 bits: 64 compiler: gcc v: 9.3.0
Desktop: Cinnamon 4.8.6 wm: muffin 4.8.1 dm: LightDM 1.30.0
Distro: Linux Mint 20.1 Ulyssa base: Ubuntu 20.04 focal
Machine:
Type: Desktop Mobo: MSI model: 970 GAMING (MS-7693) v: 4.0
serial: <filter> BIOS: American Megatrends v: 22.4 date: 12/21/2015
CPU:
Topology: Quad Core model: AMD Phenom II X4 965 bits: 64 type: MCP
arch: K10 rev: 3 L2 cache: 2048 KiB
flags: lm nx pae sse sse2 sse3 sse4a svm bogomips: 27200
Speed: 800 MHz min/max: 800/3400 MHz Core speeds (MHz): 1: 800 2: 800
3: 800 4: 800
Graphics:
Device-1: NVIDIA GK104 [GeForce GTX 660 Ti] vendor: eVga.com.
driver: nouveau v: kernel bus ID: 01:00.0 chip ID: 10de:1183
Display: x11 server: X.Org 1.20.11 driver: modesetting
unloaded: fbdev,vesa resolution: 1920x1080~60Hz
OpenGL: renderer: NVE4 v: 4.3 Mesa 21.0.3 direct render: Yes
Audio:
Device-1: AMD SBx00 Azalia vendor: Micro-Star MSI driver: snd_hda_intel
v: kernel bus ID: 00:14.2 chip ID: 1002:4383
Device-2: NVIDIA GK104 HDMI Audio vendor: eVga.com. driver: snd_hda_intel
v: kernel bus ID: 01:00.1 chip ID: 10de:0e0a
Sound Server: ALSA v: k5.4.0-91-generic
Network:
Device-1: Qualcomm Atheros Killer E220x Gigabit Ethernet
vendor: Micro-Star MSI driver: alx v: kernel port: d000 bus ID: 05:00.0
chip ID: 1969:e091
IF: enp5s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
Drives:
Local Storage: total: 2.11 TiB used: 36.93 GiB (1.7%)
ID-1: /dev/sda vendor: Western Digital model: WD3200AAJS-22L7A0
size: 298.09 GiB speed: 3.0 Gb/s serial: <filter> rev: 3E01 scheme: MBR
ID-2: /dev/sdb type: USB vendor: Seagate model: Expansion Desk
size: 1.82 TiB serial: <filter> rev: 0911 scheme: GPT
Partition:
ID-1: / size: 85.43 GiB used: 36.93 GiB (43.2%) fs: ext4 dev: /dev/sda5
Sensors:
System Temperatures: cpu: 50.0 C mobo: N/A gpu: nouveau temp: 59 C
Fan Speeds (RPM): N/A gpu: nouveau fan: 2280
Repos:
No active apt repos in: /etc/apt/sources.list
Active apt repos in: /etc/apt/sources.list.d/brandonsnider-cdrtools-focal.list
1: deb http://ppa.launchpad.net/brandonsnider/cdrtools/ubuntu focal main
Active apt repos in: /etc/apt/sources.list.d/brave-browser-release.list
1: deb [signed-by=/usr/share/keyrings/brave-browser-archive-keyring.gpg arch=amd64] https://brave-browser-apt-release.s3.brave.com/ stable main
Active apt repos in: /etc/apt/sources.list.d/deadsnakes-ppa-focal.list
1: deb http://ppa.launchpad.net/deadsnakes/ppa/ubuntu focal main
Active apt repos in: /etc/apt/sources.list.d/graphics-drivers-ppa-focal.list
1: deb http://ppa.launchpad.net/graphics-drivers/ppa/ubuntu focal main
Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list
1: deb http://packages.linuxmint.com ulyssa main upstream import backport #id:linuxmint_main
2: deb http://archive.ubuntu.com/ubuntu focal main restricted universe multiverse
3: deb http://archive.ubuntu.com/ubuntu focal-updates main restricted universe multiverse
4: deb http://archive.ubuntu.com/ubuntu focal-backports main restricted universe multiverse
5: deb http://security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
6: deb http://archive.canonical.com/ubuntu/ focal partner
Active apt repos in: /etc/apt/sources.list.d/steam.list
1: deb [arch=amd64,i386] https://repo.steampowered.com/steam/ stable steam
2: deb-src [arch=amd64,i386] https://repo.steampowered.com/steam/ stable steam
Active apt repos in: /etc/apt/sources.list.d/tn-6-xcdroast-focal.list
1: deb http://ppa.launchpad.net/tn-6/xcdroast/ubuntu focal main
Active apt repos in: /etc/apt/sources.list.d/vscode.list
1: deb [arch=amd64 signed-by=/etc/apt/trusted.gpg.d/packages.microsoft.gpg] https://packages.microsoft.com/repos/vscode stable main
Info:
Processes: 231 Uptime: 8h 40m Memory: 7.74 GiB used: 2.22 GiB (28.7%)
Init: systemd v: 245 runlevel: 5 Compilers: gcc: 9.3.0 alt: 9 Shell: bash
v: 5.0.17 running in: gnome-terminal inxi: 3.0.38

[ThaCrip]

Driver Manager

that's the typical way to install NVIDIA drivers on Mint.

[SeaTam]

Thank you! I'm finally able to play Doom on Steam because of you! All I had to do was update the drivers. Thank you.