Hey Malek, this is looking solid already! Despite not really being able to play it (only could register 1 player so couldn't start) I think the tutorial gave me a good sense of how it may feel so I'll address from that perspective.
The tutorial is very good, simple and gets the point across! Only thing it's missing, like HazMatt said, is showing what the buttons are in the tutorial itself (in addition to showing them in your main menu).
Outside of the tutorial, I would love to have some kind of practice range, or even a singleplayer mode that might need some adjustments to the mechanics if you don't want to make AI for your game just yet. Otherwise, this looks and feels like a really strong foundation for a party game and I'm excited to see how it grows and evolves!