Actually, you can add a cloud created Power Automate/WorkFlow to your Team's Channel. You will need to ensure you create a Workflows/Power Automate tab in your channel (that allows you to see existing WorkFlows). Initially, when you do this you cannot see anything that has not been granted "ownership" to the PowerAutomate/Flow and all you can apparently do is create a new flow. To see it in the list in your teams channel give an your Workflow permissions to the teams group you want it to be seen in.
1. Open the flow in Power Automate/WorkFlows
2. On the Workflow details screen - (not the "Edit" screen) you will see a box for "Co-Owners", click "Edit"
3. On the edit screen, there is a search box where you can search for users/groups to "co-own" the flow. Type in your teams group name (i.e. Daves Place) and select the group name from the list to add it as a co-owner.
As soon as you make this association/co-ownership you will see the flow in the Teams PowerAutomate/Workflows tab you created:
Enjoy!
