I'm sorry to hear you are suffering - I can relate because my implants had to be redone after on 5 years - and I ended up with 3 surgeries and a lot of PT to get it right.

Yes, I do have a suggestion, actually a couple of them.

First, as to pelvic tilt, a huge percentage of the population has this - 75% of women, 85% of men. Treating pelvic tilt may or may not be successful, and may not be the source of your pain.
https://pubmed.ncbi.nlm.nih.gov/21658988/
Second, no amount of PT, massage or other external measures is going to fix the problem you have - that the femoral stem is adhered to the wrong tissue. I do not know if there are other risks associated with it not being adhered to the femur - that is a question for an experience remedial orthopedic surgeon.

Third, when an implanted hip "goes bad", you need an orthopedic surgeon who specializes in revisions and remediation to evaluate the problem, to determine whether waiting is going to make the issue worse, and to perform the corrective surgery. Then you need orthopedic rehab PT (not typical hip replacement PT) to get your gait corrected after years of limping.

I understand your frustration, but maybe a consult can explain all of your risks and options. If the loose implant damages the femur, it is possible there could be ongoing damage that will make later revision more difficult.

And, from your screen name, it sounds like you might be a dancer - wouldn't it be nice to get on the floor again?
Sue