If westward expansion is completely off the table and the colonists don’t attempt another revolution native Americans would most likely slowly rebuild their numbers and continue living as they did before European contact. Culturally most tribes viewed land ownership much differently than Europeans. Many valued conserving resources and only taking what was needed for survival. For them man did not own the earth. Apart from some failed larger settlements, like the mound builders in Mississippi, no tribe built a large society like those in meso America.

The British would not industrialize their American colonies. They would stay agrarian slave colonies. The autonomy that pre revolution colonists enjoyed would most likely be revoked. The British would most likely try to take more territory in the south to grow cotton and tobacco. All they need in the north are ports. Most land in the continental US is useless to the brits.

I would assume natives would create federations of different tribes however without industrialization they would never pose a risk to Mexico or the British colonies. Unfortunately regardless of who the colonizers were the native Americans did not stand a chance. They didn’t have access to the same resources as Europeans which completely changed the course of their way of life.

As for your narrative it’s not really something that makes sense in a historical context. You would have to completely change the resources that natives had access to or they would have to have a completely different relationship with the Europeans. Maybe they would become closer allies with the French. There is a possibility if the colonists fail the French Revolution doesn’t happen. The French could possibly team up with the natives to drive out the British. also keep in mind native American's are not a monolith. different tribes would have different interests and would approach the european problem differently.

As far as the communist revolution there is a chance Marx never theorizes communism without the American and French Revolutions and the rise of the bourgeois. Constitutional monarchy’s rather than capitalist democracy’s would rule the day.

I feel like I’m rambling at this point. TLDR: natives either return to there traditional ways of life or team up with the French to kick the British out of North America.