I’m glad you like the results and thank you for translating to English.
There are many good DAWs and my choice is Reaper (I think it’s localized for French) or Logic Pro X (Mac only). Search the forum using the word tutorials.
I don’t try to create MIDI files from scratch. I usually find good MIDI source files by searching the Internet; theyare plentiful and available in many languages (French, Spanish, etc).