Penalty shootout is totally not based on luck, you can always see the best penalty kick takers score and the best goalkeepers use data and skill to make the saves.
It's fine if the characters think so, but any team who does can be guaranteed to not go very far.
I don't think I can ever get into this manga due to the carefree and naive depiction of slavery in the earlier chapters. And it's not like it was a plot point either, it's just brushed aside.
I just started reading this from the beginning, after reading a few chapters here and there. The art is pretty nice and the character weird, can't wait to read more.