WiFi Extender

Hi Experts,

I know that that there are WiFi Extender products, but my question is not for these products, but rather, how to Extend my WiFi?

My apartment is close to 1200SQFT and used to have Bell Canada Internet Residential, which came  with 5 "Bell Pods" with a "Bell 3000" Router/Modem combo and my WiFi was good.

However, as I run a Web Design business from home, for one project I needed to get Static IP which was not offered through Bell Residential, so I upgraded to Bell Business. It comes with "Bell 2000" instead, but much higher down/upload speed 300/900 mbps. They don't provide the Bell Pods for business, saying that they only provide the bare minimum, and I need to build it up, which makes sense.

My networking aren't that great, but I'm not afraid of Router settings neither. So, my question is how can I extend my WiFi in economical sense. A few years ago, I had Rogers that also provided a Modem/Router combo, but I did add my own router and disable Rogers router feature, so I am able to do that as well if the Bell 2000 allows it.

My Bell is Fiber and the Fiber runs through the room with no WiFi, so I am also wonderig if I can take advantage of that by placing a device there, and then a Fiber extension.?However, currently my router in my office with a lots of wired devices.

I also came across https://www.youtube.com/watch?v=ie4imVwn9vk, which talks about Samsung SmartThings and I like that signal bounces pod to pod and finds the less congested route. What I don't like is price tag.

Like I mentioned at the beginning, if I need a WiFi Extender that can use the same SSID - great, but I am not even sure how well that will work. I purchased once a WiFi extender, but did not really work well.

Thanks,