no WiFi and Ethernet connection on msi gaming edge wifi. Where and how do I install the drivers if possible

I have freshly installed Ubuntu 20.04 on my newly build PC but it isn't recognizing my WiFi & Ethernet device. I downloaded Windows 10 on it before that and the Internet connection is just fine but when I use Ubuntu I get nothing. Not even a "No WiFi found" but "no WiFi adapter found". I already went to "Software & Updates" -> "Additional Drivers" like most forums say but there it's only showing me drivers for my graphics card. The WiFi and Ethernet devices are mounted on the Motherboard (msi B550 gaming edge WiFi) and the driver for the motherboard is only available for Windows 10 64bit. In the specification its says that the "Realtek® RTL8125B 2.5G LAN" driver is used but it is running on a "Intel® Wi-Fi 6 AX200". I don't know which exact driver to use and even if I knew I don't know how to install it on Linux because I am new to it.

The only question coming close to my Problem is Here but it's using Arch Linux and I didn't understand a thing on what to do.

How to I get Internet in form of WiFi or Ethernet?

Right now I get my WiFi using USB Tethering from my Phone but it is really slow.

Here is the important Output I get when typing lspci -k:

29:00.0 Network controller: Intel Corporation Wi-Fi 6 AX200 (rev 1a)
    DeviceName: RTL8111E Giga LAN
    Subsystem: Intel Corporation Wi-Fi 6 AX200
    Kernel driver in use: iwlwifi
    Kernel modules: iwlwifi
2a:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller (rev 04)
    Subsystem: Micro-Star International Co., Ltd. [MSI] RTL8125 2.5GbE Controller
    Kernel modules: r8169

And for ifconfig:

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 2547  bytes 209036 (209.0 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 2547  bytes 209036 (209.0 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

and sudo lshw -C network:

*-network                 
       description: Network controller
       product: Wi-Fi 6 AX200
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:29:00.0
       version: 1a
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list
       configuration: driver=iwlwifi latency=0
       resources: irq:33 memory:fc600000-fc603fff
  *-network UNCLAIMED
       description: Ethernet controller
       product: RTL8125 2.5GbE Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:2a:00.0
       version: 04
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd cap_list
       configuration: latency=0
       resources: ioport:f000(size=256) memory:fc500000-fc50ffff memory:fc510000-fc513fff

I also followed a lot of tutorials that promised to fix this problem by installing additional drivers but all of them didn't work. I think it has to do something with the build in WiFi and Ethernet. And pleas give me easy to follow institutions. I am new to Linux/Ubuntu and I don't know the terminology yet. Thanks for any answers in advance.

Solution 1:

I have found my solution. I downloaded the driver for realtek ethernet and entert the comands as good as i could and it worked.