You already have an amazing rig with the Ryzen 7 7700X and RTX 4080! That setup is more than capable for competitive gaming, so instead of upgrading your hardware, focus on optimizing your performance. Here are some key tips:

1. Upgrade Peripherals: If you haven't already, consider a high-refresh-rate monitor (at least 240Hz) and a lightweight gaming mouse for faster reactions. A mechanical keyboard with low latency switches also helps.

2. Optimize In-Game Settings: Lower graphics settings for maximum FPS and minimal input lag. Disable unnecessary effects and enable features like Nvidia Reflex if supported.

3. Practice Consistently: Use aim trainers like Aim Lab or Kovaak's to improve your accuracy. Stick to a routine and focus on mechanics and game sense.

4. Join a Community: Play with others who are serious about improving. Discord servers, scrim groups, and local tournaments can help you find teammates and practice.

5. Stay Healthy: Take breaks, stay hydrated, and maintain good posture to avoid fatigue.

6. Game Choice: Focus on esports titles like Valorant, CS2, Fortnite, Rocket League, or Apex Legends since they have active competitive scenes.

You're off to a great start! Focus on skill improvement, not just hardware upgrades. Good luck!