Having problems

[FuackersMint]

I’m having problems with my 02 Chevy Silverado 1500 4.3 rwd. It’s started running shitty and I thought the cats were plugged so I cut them off and it wouldn’t start, next day it started. Then I moved it and next day wouldn’t start so I thought it was a fuel filter the way it chugged when you let off the brake and it sounded plugged, and when you take off it didn’t have much take off power and sounded like it was plugged had all the symptoms of a bad fuel filter but I replaced it and no luck . What should I do next lol . I’ve already replaced starter alitlle while ago new wire from starter to battery, let me know if you have any ideas, thanks .