Step 1: Edit your Connection Settings
For Wired Connections:
-> -> Network -> Wired Connection (Ethernet) -> Edit
For Wireless Connections:
-> -> Network -> Wi-Fi Connection -> Edit
Step 2: Set DNS servers
Now change the DNS server to a UnoDNS server from https://quickstart3.unotelly.com/global-servers
Step 3: Change LG Service Country
Change to the service country you are going to use the service from in
-> -> General -> Location -> LG Services Country
If you do not see US or UK regions, you will not be able to download those apps.
Step 4: Open Apps
Click to access the Launcher and see the apps available to your TV.
Please Note: Location privacy for LG devices with the new webOS firmware is not available if the region doesn't appear for you under "LG Services Country". It seems that webOS locks down the app selection for your device to the region the TV was bought in.