The closest I ever came to ground looping in 33 years of taildragging was on my beloved Chippy. It was the first flight in her after a few years in a Yak52 group (I'd previously been in the Chippy group for a couple of decades so had lots of Chippy time).
The Yak52 lands itself. It's the easiest-to-land aeroplane I have ever flown.
On that first 'return to Chippy' flight I turned off the runway (grass) a bit sharpish and tad too fast. I felt the tail step out, but full opposite rudder and a gentle yank on the brake lever got back her in line before she swung. It was close run thing, though!
The other time I was nearly embarrased was taxying downwind in a very strong tailwind and allowing the rudder to blow over to full deflection. That put a brake on and lifted the tail despite full forward stick. I instantly shut the throttle and she teetered for a monent before gracefully placing her tailwheel on the ground again. I learned, after that, to only taxy in such conditions with feet braced hard on the rudder pedals, as for a tail slide!