I don't know what pixelvibe means and should I use it to draw graphics I don't understand

PixelVibe is the AI art generation platform by our sponsor. Please make sure to look at the itch page for all the details about them and all the links

I mean, do I have to use artificial intelligence in the graphics that I will draw?

The AI has to be used for graphics unless you use their free asset packs or are making UI. However, you can also modify the AI's images as much as you need.