@jeremyjong welcome to the KNIME forum
Concerning Loops you might want to start educating yourself with some of these links (especially concerning the ones about loops):
For your tasks you might try to use a condition that would never be met in:
But you will have to be careful letting run a service/task indefinitely on a machine. You should plan ahead.
A somewhat more complicated example is here to do certain tasks if conditions are met within a loop.
For a lot of automation you might want to take a look at the KNIME server (KNIME Business Hub | KNIME), since it is built to handle such jobs.