It looks like you're looking for a for the game Freestyle Street Basketball (often just called Freestyle or Freestyle 1 by the community).
So, what draws players to Freestyle Street Basketball 1 private servers? Here are a few key reasons:
Access all outfits, skills, and characters without the grind.
: Use the AI in free matches to practice jump shot timing and marking opponents before entering pro channels.
Since the official servers for the original (FS1) were shut down years ago, private servers are the only way to experience the game’s classic 3-on-3 arcade gameplay. These community-run projects aim to preserve the original mechanics, music, and "street" aesthetic that defined the early 2000s MMO sports era. Overview of FS1 Private Servers