Delegation does not mean abdication. If you find out too late that something has gone off the rails, it is very likely you abdicated. In other words - you badly managed the resources you have.
And this doesn’t mean micro manage people to death.
Define the outcome to be achieved and how you want to be informed incrementally on the path to that achievement. And get out of the way.
The intervals between updates should never be so long as to catch anyone off guard if the outcome is missed. If the risk is high up the reporting cadence so that you can correct, iterate, and if necessary, abandon, quickly and early.