Many lifters are so obsessed with the level of body weight they elevate they fully neglect the TuT. The classic spinal erector exercises are deadlifts and entrance squats. You are able to do dumbbell Romanian deadlifts, Which should help. You may as well do goblet squats. That may help, too. https://mariotrktn.suomiblog.com/rumored-buzz-on-dumbbell-set-and-rack-48892170