To stay anonymous, always use a VPN with a strict no-logs policy, avoid creating an account, or use a temporary email address if registration is required. Never use your real name or any personally identifiable information in your username, posts, or private messages.
Never use personal emails or recognizable usernames. Utilize temporary email services and generate unique, complex passwords using a dedicated password manager.
If you want to dive deeper into protecting your device, tell me: What do you use (Windows, macOS, Android)? Do you currently use a VPN or ad blocker ?