Begin mastering the Omnimovement system

You’re liable to blame it on age, waning reflexes, or children who have nothing but free time, but learning Omnimovement in Black Ops 6 initially feels downright painful. Everyone feels faster, more fluid, than you. But they’re not. They’re using the same control schemes and hotkeys as you, but more effectively.
The best way to learn Omnimovement, aside from spending considerable time in the Training Course, is to throw yourself into the fray. Load into the core playlist, ideally Team Deathmatch, Domination, or Hardpoint—a team-oriented game mode—and practice. You’ll likely lose, and you may wind up suffering text or voice abuse from your teammates—this is Call of Duty after all—but you’ll find that after a few rounds of leaping around like a fool, you’re beginning to gain ground with Omnimovement.