Here some tips for you, good luck:
Plan ahead: Before you start, map out where each cable should go.
Use zip ties or Velcro straps: These help bundle cables together neatly.
Take advantage of case features: Many modern cases have built-in cable routing channels and tie-down points.
Hide excess cable length: Coil extra length and secure it behind the motherboard tray if possible.
Group similar cables: Keep power cables, data cables, and front panel connectors grouped separately.
Invest in cable combs: These can make your visible cables look uniform and tidy.
Consider custom-length cables: If you're really serious about cable management, custom cables can eliminate excess length entirely.
Use a modular power supply: This allows you to use only the cables you need, reducing clutter.
Route cables along edges: Try to keep cables running along the edges of your case rather than across open areas.
Be patient: Good cable management takes time and practice. Don't rush it!