I feel for you, Hali87. It's not easy to move to a new city in any situation, and there is definitely a period of unfamiliarity and feeling away from home. Halifax is an amazing city, I absolutely love it there too.
I'm noticing that Calgary is being positioned through water cooler talk (digital or otherwise) as this panacea of opportunity, cheap housing, community and lifestyle all rolled into one convenient package. It seems to be "move to Calgary" is the default option for those looking to get away from Vancouver or the GTA.
I'm from Calgary and I can see why people want to move there, but people should prepare to move there, or anywhere. It's beautiful, but people's lifestyles really tend to focus on work, how you commute, and how your career is progressing. It is a very work-oriented city, and as such, can feel like a rat race. People love to talk about work, live work, breath work, and tell you how they go to the mountains between work on the weekends. It's also not a city you can just walk into and get a job, despite what opinions that still linger from 2007 may say about it.
Meeting new people there is like meeting new people anywhere else - you have to just get involved socially, and let the chips fall where they may. I may recommend joining a team at the
Calgary Sport and Social Club if you're into sports, I worked there very briefly years ago and you can definitely keep active, stay fit and meet people there.
Calgary also has a hell of a brewery scene, and they often put on events such as music shows, tasting nights, etc. You don't even have to like alcohol if that's not your game, most of them have non-alcoholic options too.
There's a saying I think applies here - people from the West are nice but not kind, and people from the East are kind but not nice. As someone who now lives in Toronto, I think this really does hold true.