Hi,
I’m really sorry about the issue you’re running into, Thanks for sharing the screenshot. You can try this: restart your modem and router together to refresh the connection, then ping your router (usually 192.168.1.1) to see if the problem is inside your home network or outside; if the router ping also times out, reinstall your Wi-Fi adapter driver through Device Manager and install the correct driver from TP-Link’s website, and if the router ping works, test your PC on a mobile hotspot to confirm whether the issue is with your ISP; finally, run "netsh winsock reset" and "ipconfig /flushdns" to repair any corrupted network settings, each step helps identify whether the slowdown comes from your PC, the Wi-Fi link, or the router itself.
Kind regards,