The network is very Week, how I can make it stronger?

bahij

The connection is so bad unless the apartment is not so big

Mike

Did you already tried to disable the band steering

Here the guide
https://fizz.ca/en/faq/my-wi-fi-network-cutting-how-do-i-fix-it

Huar_Cora

You can always use your personal Wi-Fi router with Fizz.
You can buy and used one with better performance.
Disable the Wi-Fi feature of the Fizz Wi-Fi modem In bridge mode, the two (2) Wi-Fi radios built into your Fizz Wi-Fi modem will be deactivated, thus disabling its Wi-Fi capabilities. Open an Internet browser and enter 192.168.0.1 in the address bar. Identify yourself using the following login information: Username: cusadmin Password: **enter your Wi-Fi password** Select General Select Gateway Disable the option ''Residential Gateway function'' Click Ok Install your personal Wi-Fi router Connect your personal router as indicated in its user guide. Plug the network cable (RJ45) into one of the four (4) numbered ports of your Fizz Wi-Fi modem

Whizz

Hello bahij,
I have checked your account and I can see you've contacted our support department and they've managed to provide you a solution to your situation.
I also suggest you check the FAQ that Mike provided and Emilioroy suggestion.
If the situation persists or you encounter anything else suspicious, don't hesitate to contact us by chat following the FAQ https://fizz.ca/en/contact-us.
Cheers!
Nicolae Bogdan