Lots of lifters are so obsessed with the quantity of body weight they lift which they totally neglect the TuT. The traditional spinal erector exercises are deadlifts and front squats. You can do dumbbell Romanian deadlifts, Which may help. You can also do goblet squats. That might help, way too. https://zionainpr.shotblogs.com/details-fiction-and-back-exercises-with-dumbbells-44624947