By request from a comment, here is how I downloaded and installed Universal GCode Sender (UGS) and Candle on both Linux (Mint) and Windows 10.
For Linux only, it was necessary to compile Candle, as it wouldn't run otherwise.

Calibration video is from James Dean Designs:    • Calibrating your CNC axis and steps ...  

Download UGS (Both Linux and Windows): https://winder.github.io/ugs_website/
Candle (Both Linux and Windows): https://github.com/Denvi/Candle

My original Unbox and build:    • Genmitsu 3020 Pro Max by Sainsmart  ...  

Edit As requested, the commands used to compile Candle

These commands are focused on Ubuntu/Debian based installes

Enter: sudo aptget install buildessential
Hit Y when prompted

Enter: sudo aptget install qt5default qt5qmake libqt5serialport5dev make gcc g++ git

You will be prompted for your password, enter it
Hit Y when prompted: Do you want to continue? [Y/n]

This could take some time and may throw some errors if any of the requirements are already installed, but should complete successfully.

In the video at this point I changed into the Downloads directory to complete the next set of commands.

Enter: cd Downloads

Enter: git clone https://github.com/Denvi/Candle.git

All being well, you should see the source code download, as in the video.

Entering: ls l should show a Candle folder

Enter: Candle/src

Enter: qmake

Enter: make

If everything works correctly, you should see all the compile commands run, perhaps with warnings, but there should be no errors.

ls should show all the source code files, all the object files created during compile, and the binary Candle should be visible as well, that is the program.

You can Enter: ./Candle to test it, it should look as it did in the video.

At this point you can manually move the binary to wherever you want it, as typing make install will simply tell you nothing to be done.