I had a chiropractor help me with back pain due to scoliosis when I was a teen. Of course, it didn’t cure the scoliosis (or anything else for that matter), but the chiropractor never claimed that it would and the treatment did help with the back pain.
I think that chiropractors can be helpful to mitigate specific types of pain related to sports injuries, etc. Of course, anyone who claims to be able to more is a charlatan.