TMI question

I know everyone is different with their bowel movements,and people get constipation but I'm having issues with my own I have this back up and dump cycle going on, been backed up 2-5 days and then something triggers a massive evacuation, and I'm wishing it was diarrhea rather than the lateral. I have ate fiber, drank water, miralax, stool softeners and nothing actually worked to fix my issue ( not at the same time)

Does anyone experience this? how do you make this issue stop, can smoking a cigarette every couple of days fix it to where I can have regular bowel movements again? This ain't the first time this happened to me either.