Please review my translation of your translation and correct anything which is inexact.
"and no device manager do so any error" = no error alerts in Device Manager?
"First of its not about our Lan at the same location runs with 725KB/s(still **** but it's a old one) " =
LAN connection for local sharing of files or printing runs at 725KB/s?
"But it used to have it used to have internet and it was good 5MB/s" = LAN no longer connects to internet?
https://www.tp-link.com/us/download/TL-WDN4800.html might help with LAN card
What is your router? What is your modem? Did you check for proper connections? Have you powered them off and then restarted them? Are you using current drivers? I need a fully detailed report in order to help further.