Totally agree. I was working out irregularly for past few years, however, in a crappy "bro-science" way. I did heavy squats, deadlifts which made my muscle imbalances even worse.

When I visited few physioterapists, they just showed me few exercises (which I could find on the internet). I recently started to work out just with my body weight and focus on my core strength. It's been better, but my back still hurts after exercise from time to time... Fuck sedentary job.