can we run workflow inside workflow, like

def workflow1():
   @task
   def abc(): somelogichere

   with Flow('one') as f:
      abc()
   
   f.run()

@task
def xyz(): workflow1()

with Flow('main flow') as f:
   xyz()

f.run()

I think there's an example of a flow of flows here? https://github.com/anna-geller/packaging-prefect-flows/tree/master/flows/gcs_flow_of_flows_local_run

Yeah you need to use Prefect Cloud to run a Flow in Flows. The subflow is started by Prefect Cloud