Compression fracture of a lower vertebrae as a youngster (car accident) helped derail my MLB dreams, and also left me with lingering back issues (didn't help that I made a "comeback" later on).
Was told to go to a chiro post-accident. I did, for a couple years. Complete waste. But I kept going because I was fairly young and didn't know better. We didn't have the benefit of "Dr. Google" back then. Relief for a few moments, and then it would go back to the same ole same ole, or sometimes the "back gremlin" would settle in somewhere else and make it even worse. I learned to crack myself if I feel a motion restriction, and I now have no need for their short-term relief. You don't need to do the "fancy" stuff they do ... no need to risk hurting yourself. The only "trick" is to learn where the issue is .. often, if you have a muscle issue, and it's not a direct strain, the issue actually stems from another area.
What helped/cured? Lifting. Especially deadlifts. Heavy deadlifts (eventually) ... but never maxing (keep it to 4 rep as the lowest rep set). Sciatic problems? Gone. Lower back weakness? Mostly gone (would still appear when holding things away from my body for extended periods). Seems counterintuitive, and some will say they can't do that because their back hurts too much/is too weak. Push through ... it'll help. Or at least it did for me.
And deep tissue massage. I'll take one 90 minute deep tissue sesh over 3 months of chiro quackery.
Stretch your own neck ... that cures so many little/medium sized things in the rest of your back, it's amazeballs ... and if you do it enough, it appears to help longer-term. Lean your head to one side (or to the front), then take the palm of your hand and press and push your way from the base of your back neck muscle (your upper trap), up to the base of your skull. It hurts so good. Grab the back of your skull, at the base, with both hands and give a little upward jolt.