Starting with a clean install of ArcoLinuxD we install the Plasma desktop on top of it and install all our applications on it. This desktop can be yours.
If you want you can learn to use github. Here you can find why it is important you should do that and how to do it. Easy way.
We use scripts to automate the installation procedure. You can take a look at them here.
Next video is about ArcoLinuxB. Plasma is then installed via an iso rather then with scripts coming from a github. It is however still Plasma. You can check it out too.