It's not your fault at all.
Particularly a few years ago, it would probably not have been standard practice for hormone therapy to be offered after oophorectomy beyond the average age of natural menopause, which is 51.
I don't agree with that, however that practice was common. Even now much younger women are having their ovaries removed and going untreated for the loss of hormones.
So you would have to have had a level of both clinical knowledge and advocacy skills that frankly most people do not, to get hormone therapy at that time.
That said, you are still within the somewhat arbitrary but often cited 10 years from menopause which is considered the window of opportunity to start hormone therapy, so whilst the best time to act would have been 8 years ago, the next best time is now.
Having had a hysterectomy, you are also in the fortunate position of being able to take estrogen without a progestogen.
Hormone therapy is more effective than bisphosphonates, treats the intravertebral discs as well, and has a positive effect on quality of life as well as multiple health outcomes.
It doesn't even have to be either or, you can take estrogen in addition to bisphosphonates.