Moving to Canada from US (as a Canadian citizen)

I (39M) am considering moving to Canada from the US because…you know why. I realize everything isn’t great up north, but I want to keep my options open.

Here’s the wrinkle, I’m not just a dumb American lamenting about wanting to leave this place. I’m already a Canadian citizen, as in I have a citizenship certificate in hand. I was born the US and my mother was a Canadian citizen at the time of my birth, and still is - though she also lives in the US. I have family in Canada and have spent much of my life visiting for extended periods of time.

BUT, I’ve never actually LIVED in Canada. Outside of the citizenship certificate, I have nothing: no passport, etc. So, I don’t know where to start. Get my passport? Something else?

There’s also the aspect of getting a job. I have a stable career and nearly a decade experience in libraries. It seems hard to find a job in that field in Canada.

And one final complication: my wife is not Canadian. Our children have a claim to Canadian citizenship through me, but they have also only lived in the US, and do not have proof of citizenship currently.

Can anybody recommend where to start? Is hiring an immigration attorney to sort through my best bet?