My 2002 Suburban is throwing a p0300 p0332 and 02 sensors p0134 p0135

What is your question?

Suburban was running a little rougher than normal so I cleaned the throttle body. Put it back on and now it is stumbling,idling very rough . Ran the codes got a p0300 p0332 p0135 p0134. I knew it needed a new cat. So my question is can the Cat be causing it to run like this ? Should I replace the catalytic converter first and 02 sensors or the knock sensor and intake gaskets? Never ran this bad til the throttle was cleaned. The scan tool said the codes along with the words, evap, misfire, 4 inc , mil on monitors , catalyst, 02 sensor, HTr 02 , fuel and comp . Never overheated, no visible holes or cracks in hoses. Thanks!

What makes this problem better or worse?

Idle, running it

How long has your 2002 Chevrolet Suburban 1500 had this problem?

2 says for the rough idle. Its parked now. The catalytic converter has been bad for a while