I've been planning my hysterectomy since I was 10. Unfortunately it's the only way to permanently get rid of periods. I only say 'unfortunately' because of how difficult it is to get one. Difficult, BUT NOT IMPOSSIBLE! If you know what you're doing.
Quick note on hysterectomies- a lot of dipshit no good idiot morons are DESPERATE to fill women's heads with myths about how dangerous and bad hysterectomies are for you and how you'll have to be on hormones for the rest of your life. THIS IS NOT TRUE. You will only have to be on hormones if your OVARIES are removed. NOT your uterus. If your ovaries are healthy, there is NO reason for them to be removed along with the uterus under any circumstance. Removal of ovaries is an oophorectomy and has nothing to do with a hysterectomy.
The only real risks of a hysterectomy in an otherwise healthy female are the same risks you take with any surgery. There's some slight evidence of pelvic floor weakening but most women who have hystos are post-menopausal, when things like PFW become more common anyway, which muddies the statistical waters.
If you haven't already, I suggest doing a deep dive into your female anatomy. It's enlightening, and even just reading through the wiki on the uterus will put you in a better position than a solid 50% of doctors.
I've been taking birth control back to back in pill form (skipping the stupid sugar pill week because it's scientifically pointless) and haven't had a period in over 5 years. Before the pill I was on depo shots every 4 months. Easiest method ever. Only stopped because it was making me too depressed and fat.
Other solutions I haven't tried but I know work to manage periods: certain types of IUDs and nexplanon (skin implant that releases medicine over time). I avoided IUDs because doctors think it's okay to do this procedure without any kind of pain management and will literally just shove a plug into your extremely tight cervix. I avoided nexplanon because it was too much trouble for the same result as depo. But that's just me- I know lots of women who love it.
Doctors may tell you that you can't safely be on birth control for a prolonged period. They're full of shit. Based on bad science that has been debunked. Menstruation and fertility control women. The overculture rejects any attempts to rid ourselves of these burdens.
That said, there's really no (good) way to stop periods without the involvement of medical professionals unfortunately. r/childfree on Reddit has a list of doctors who have willingly done sterilization procedures and is a great place to look for a dr if you're in the US. There may be non-US resources there as well.
Some other options that you might find more traction with if no one will do a hysterectomy: uterine ablation (burns off the endometrial lining that fertilized eggs implant into, usually reduces/removes periods, effectively permanent but not always- harder to get drs to do this though), bilateral salpingectomy (does not manage periods but severs the fallopian tubes which connect the ovaries to the uterus, meaning eggs will never be able to be fertilized bc they're trapped in the ovaries), or having your tubes tied (same idea as bisalp but more easily reversible- also worth nothing bisalp is preferred by the majority of doctors as tube tying has a higher failure rate, so unless it's the ONLY thing you can access, don't recommend).
If you're in the US, Obamacare made it so all health insurance has to cover at least one sterilization procedure, usually bisalp for women, vasectomy for men. Your biggest problem is going to be finding a doctor to do it, though. Health insurance is a secondary concern.
This was kind of a word vomit but PLEASE let me know if you have any questions. Women will never have true freedom until we're allowed to take full control over our reproductive system, including yeeting that fucker into a hospital biohazard incinerator if we want to.