About the MelonDS emulator....

So i use CentOS Stream 9 and have just began to use Linux like a few days ago. I wanted to install Melon DS and was following a tutorial on YT. It told me to extract the zip file using 7zip and I was using P7zip. When i extracted it it just wont open!!!!. Please guide me and if possible provide a step by step guide from the beginning to install and use MelonDS and run pokemon games on it.