Hello @azott,
There is no way in plain Revit to generatie these schematics automatically.
You could draw them by using a Drafting View and place symbols, draw lines, place text, etc.
you can create symbolic families with types to switch QuickType between several symbols and create line families where you can place labels on.
But I think you alteady figgerd that out.
you can look in the Autodesk Revit App store.
maybe there is a tool that can help you.
I will show you one of my mechanical schematics.