How to clean catalytic converter (lower budget)

What are the ways I could clean my cat?

The clogging issue was from a bad O2 sensor and bad fuel pressure regulator(if part of issue) and is now replaced. Im worrying about the cat currently, is there a way it could be cleaned fairly cheaply?

I have 4 known issues(2 being motor related, 2 being suspension area related) left to fix and want to fix the motor issues first.

2003 Saturn LW200, exhaust is completely original, but leaking resonator replaced with a new glass pack muffler, no idea if the video is needed.