Yep. My weight has yo-yo'ed up and down since my mid-teens. At age 15 I lost 30+ pounds during a summer-long low-calorie diet, going from 155 to 125. I regained all the weight plus more in a couple of years.
At age 20 I weighed 176 pounds and stood 5'1 short. I lost 60 pounds on a very low-calorie diet plus exercise and weighed in at 116 pounds. I regained it all plus more, and by age 24 weighed 205 pounds.
At age 26 I weighed 216 pounds. I lost 55 pounds through diet and exercise, but regained most of it.
At age 29 I weighed 203 pounds. I lost 25 pounds through diet and exercise, but regained most of it.
On my 32nd birthday I weighed 180 pounds. I was asked to be a bridesmaid for an upcoming wedding, so I lost 52 pounds through diet and exercise, weighing in at 128 pounds on the wedding day. I regained it all (plus more) within a year.
By my 34th birthday I weighed 225, my heaviest weight ever. I had weight loss surgery two months after my 34th birthday. Bariatric surgery is no guarantee of anything, but this is the first time in my life that I've been weight-stable and not so fixated on food.
So when people say, "You can lose the weight without surgery," I agree. In fact, I've lost 200+ pounds over the past couple of decades. Losing weight was not my issue...keeping it off was problematic. Bariatric surgery has offered the last glimmer of hope for keeping the weight off. However, my struggle will be lifelong.