There is a functionality to mount ADF within fabric ecosystem and then the ADF runs via the fabric capacity. That is the best way to move over the ADF as is in fabric.
https://learn.microsoft.com/en-us/fabric/data-factory/tutorial-bring-azure-data-factory-to-fabric
for ADF to Fabric data pipeline migration, you can refer the below doc
https://learn.microsoft.com/en-us/fabric/data-factory/migrate-from-azure-data-factory
ADF dataflows are not supported in fabric data pipelines, so you would have to manually redesign them in Fabric dataflow Gen 2 or notebooks