I know a number of people living in tiny houses, but any designing I've done was for auxiliary housing rather than primary.
First, are you wondering if it's practical to live in Canada's climate in a tiny house? Location matters so much. The Inuit certainly did so for generations! However, many Indigenous living in wet or snowy conditions, opted for large, multifamily dwellings.
An example of an issue I've run into is the difficulty of people coming in sopping wet and needing quick access to places to hang coats to drip dry.
Second, are you thinking of a tiny house that is regularly mobile, occasionally mobile, or permanent? Regularly mobile would be something like the "stealth trucks" that move around daily or every several days, but appear to be "just a truck" rather than a full-time home for someone. Occasionally mobile would be a tiny house on wheels that has a permanent parking place with hook-ups, but if jobs or location needs to change, that can be done without too much trouble. Permanent means a permanent foundation. I know of a fellow who lived with his wife and children in a renovated garage - likely 20ft by 20ft. I think there are official numbers that determine, "tiny" vs "small". There are a lot of small, permanent houses on the islands in BC.
Personally, saving for any reason that motivates you to save for a goal is an asset for long term stability. I keep reading too often about people who feel they have no future, so they use the dopamine hit of buying something new, to feel better for a few minutes. This is contributing to our landfill issues, and becomes a vicious circle. If I needed to feel like long term stability was a goal, I'd be more in favor of volunteering with Habitat for Humanity or similar so that I'd have some of the skills I would need to build a small, very efficient home. Most homes are easily 2-3 times larger than needed. I read recently of a couple that "downsized" to a 3000 sq ft home for retirement, with 2 outbuildings. My sister lived in a 900 sq ft home and it was plenty of space for a single retired lady! What was more important was that it had the 3 things that really mattered to her - a sunroom, a workable kitchen and a walk-in shower.
I did a *lot* of reading of practical housing books when we knew we would need to relocate for work. Susanka's series starting with "the not so small house" , Alexander's "The Pattern Language", and many more. There are some good ideas on the internet, but the niche is being monetized, so I wouldn't rely on that without doing some reading first and ideally getting some practical building skills.
I would also suggest you head on over to the "SkIP" forum - it is all about practicing practical skills that you will need if you want your own home, regardless of the size:
https://permies.com/c/skip
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