Nocturne excels in the early to mid-game but has limited late-game carry potential. Focus on using your ultimate to pick off isolated targets and snowball.
Adapt your item build based on the enemy team composition. Opt for Stridebreaker against bruiser-heavy teams, or Profane Hydra and Opportunity to assassinate squishy targets.
Don't expect to be the primary carry. Instead, focus on enabling your team by disrupting enemy backlines and creating crucial picks with your ultimate.