Could you please share a screenshot of your flow's configuration?
Could you please share a bit more about your scenario?
If you want to check if the flow already exists in your Flow Environment, I think the "List my flows" action of Flow management connector could achieve your needs. You could add the "List my flows" action within your flow and then add a Condition to filter the specific flow. I have made a test on my side and please take a try with the following flow's configuration:
Please check and see if the following article would help in your scenario: