Zend certified PHP/Magento developer

Internet connectivity issues – “Request timeout” followed by “General failure” [closed]

I recently moved into a new apartment and my internet keeps cutting on and off. I haven’t had this issue prior to moving out.

My pc is connected to a LAN wallsocket.
The ISP provided router/modem is connected to a LAN wallsocket to connect the PC.
The rouer/modem is connected to a glass fiber socket.

The issue doesn’t seem to happen on my phone when im using the WiFi.

I tried pinging google.com and this is the result once the cut off happens:
ping

My internet speed seems normal, other than the afforementioned cut off. speedtest

Any suggestions as to why this is happening?