The Lucky Player Is Out of Materials Again

In gacha games, it all comes down to your luck with the draw. But what good does that do me? I don't have any materials to level up! Notes: 1. The characters aren't smarter than the author, and the author isn't very smart. 2. Updates may not be very frequent. 3. The timeline is chaotic, and the characters may be out of character. 4. The entire story is in first person. Theme: The anthem of humanity is the anthem of courage.