First time in Canada

Hello northern neighbors, I’m taking my annual hockey trip this year to Ottawa in March from Washington DC, and it’ll be my first time in Canada, im very excited. I am posting to ask the best way to get from downtown to Canadian Tire Center, either with Uber/Lyft or public transportation. Aside from that, any good local spots to eat/drink/see? I’ve got some breweries lined up, as well as Parliament Hill, the Canadian War Museum, and the National Gallery. Thanks in advance, can’t wait to see your great city!

Edit: What’s the best way to get to downtown from the airport, Uber or taxi?