I had a post on this previously:

https://www.reddit.com/r/AskHistorians/comments/dlbqkb/before_the_american_revolution_were_the_british/fcxpzf8/ by u/enygma9753.

Essentially, the 1774 Quebec Act (one of the Intolerable Acts that drove the 13 colonies to rebel) accommodated the language, religion and property rights of Canada's French population, which had numbered around 70-80,000 by the Conquest of New France. British North America, or 'the Canadas', as they were known, included present-day Ontario, Quebec, the Maritime colonies, and the largely unsettled prairies and Arctic (then known as Rupert's Land).

While Nova Scotia was the colony most similar to their American cousins, with its own assembly and an influential merchant class, most of the real authority in Canada still lay with the Executive Council: the governors, the magistrates, military and high-ranking officials. There was no actual universal representation until the 1840s. The ordinary people, while irritated by heavy-handed colonial government, were mostly indifferent and turned against the Patriot cause due to American privateering raids.

In Quebec, the British had the support of the clergy, who railed against the risk of anarchy from the rebellion. Most of the merchant class also aligned with Britain, as they benefited from free access to the imperial market esp. after American independence. The majority French Canadian population weren't fond of their British rulers, but they liked their zealously anti-Catholic American neighbours even less.

There were rebel agitators in both Quebec and in Nova Scotia, but they had little support locally. Benedict Arnold's invasion of Quebec failed in 1775, as British ships arrived in the St. Lawrence with reinforcements in the spring.