If I get fizz internet would I also get landline for free?
No. They don't offer Landline services.
Like I mentioned in the other thread you would need to get a 3rd party VoIP service. They are not expensive, but not included.
There is something like Fongo, which is $5/m (and a small fee up front for the hardware needed), there is VoIP.ms which is a little more, but you need to provide your own hardware. There is ooma, which you can buy from even Costco I think which have a small monthly fee after you have the hardware.
Unfortunately Fizz doesn’t offer a landline service, only internet and mobile phone.
However, there is currently a promotion with 100$ Welcome Bonus right now :)