No "failure" state in most modes — you retry minigames.
Unlockables earned by playing (outfits, areas, music).
No console/debug access in shipped builds.
If Stuck
GameFAQs / IGN — Walkthroughs for Bratz: Rock Angelz, Forever Diamondz, Super Babyz, Girl Really Rocks.
YouTube — "Bratz [Game] [Level] walkthrough."
Lower Difficulty — If option exists.
Note: Bratz games are largely lost media (delisted, no digital re-release). Physical discs on eBay ($20–$60). Emulation (PCSX2 for PS2 ports) possible.