Fair enough. I'm the opposite tbh, I'm so regimented
I generally train on upper/lower type splits training each muscle twice a week, though I'm doing push/pull atm which I'm quite enjoying, same sorta thing but just switched round a bit. I've been into the Dorian Yates training style for a good while now, nearing on a couple of years. I've got my spreadsheet, that says for each exercise, on my last workout I used this much weight for this many reps on my workset - today, I do one more rep. I go to balls-to-the-wall failure, grunting, grinding, the last rep takes 5+ seconds normally, the form is strict still but I'm really pushing against the sticking point with everything I've got. I've always stuck to the DY style of any warmup sets as needed (if any, depending on where the exercise is in the workout) and then one set to total failure followed up by an intensity technique to take the set beyond failure - be it a dropset, cheat reps/ extra negatives, partials etc. Atm I'm experimenting with more ramp-up sets and done away with the set-extender to see how it goes, but the above approach served me very well.
My weakness has always been pushing movements tbh due to rotator cuff problems. Getting stronger since I stopped freeweight benching for a while, I think those types of exercises were aggravating it. Using Hammer Strength press machines now and I'm still gaining on my chest, and my strength on overhead pressing movements is coming leaps and bounds atm.