Felix! Yu-Gi-Oh (the one on Netflix) was so confusing, because it is not the original anime. This is from 2000, called Duel Monsters, while the original series from 1998 explains a lot
Yu gi oh zero 1998 wallpaper by MrGuffin - Download on ZEDGE™ | 1bb3
Yu-Gi-Oh!: Why 'Season 0' Looks So Different From Every Other Season
Yu-Gi-Oh! (TV Series 1998) - IMDb
Yu-Gi-Oh! season 0 (1998) extended opening japanese - YouTube