Hello, sorry to hear you're running into this.
Regarding the meaning of those icons, please refer to the image below.
Have you tested with a wired connection? Our troubleshooting guide also contains additional steps, so I'd recommend working through them one by one.
How to troubleshoot high ping and lag in Battlefield 6
If none of those help, please also try the following:
Repair or reinstall the Microsoft Visual C++ Redistributables.
Use DDU to completely remove your current graphics driver, then perform a clean reinstall.
Disable all overlays, monitoring tools, and recording software (Steam, EA App, Discord overlays, NVIDIA/AMD overlays, RTSS, MSI Afterburner, etc.).
Uninstall the HD Texture Packs
Open your game library and locate Battlefield 6.
Right-click the game and select Properties.
Go to the DLC tab and uncheck:
Single Player HD Textures
HD Textures
Combined Multiplayer & Single Player HD Textures
Multiplayer HD Textures
Single Player (if you don't plan to play the campaign for now)
REDSEC HD Textures
You can also provide a DxDiag report, and I'll take a closer look.