So sorry Jackson - fertility issues are so upsetting and confusing I know!
I'm by no means an expert but I do have low amh (1.44 at age 28 was a shock!). Your amh is linked to the number of eggs you have in your ovaries. We all start out with millions of eggs in puberty and they gradually get less and less with each period we have so the older you get the fewer eggs you have and the lower your amh gets (and fSh which is another measure of egg numbers gets higher)
The other dynamic is the quality of eggs. Again, as we age, the quality of eggs reduces and they are less likely to fertilise.
Your antri follicle count may change slightly every time you are scanned - not sure why but I had between 5-8 follicles depending on the day.
My understanding is that you can't increase the number of eggs, but there are theories about how to increase the quality of your eggs (with drugs like dhea which you have to get from America I think? I'm sure on the fertility boards they will know much more about this than I do).
I was told that with my very low amh getting pregnant naturally was not impossible but that ivf would give us our best chance. we were successful with our beautiful son on our third round with the care clinic in Nottingham whose praises I cannot sing loudly enough (we only used them for our successful cycle). In hindsight- we should have researched more the various clinics as the local options were definitely not as good.
If you were to go down the ivf route then with low amh you would expect to have a far fewer number of eggs extracted- say max 10 eggs, of which half might fertilise of which only 1-2 would make it to a decent enough grade to be implanted. So the likelihood of having spare embryos to freeze would be verY very small. But it only takes one embryo!
The other option is to go for donor eggs, but this is more expensive and obviously comes with another set of considerations. As far as I understood, your amh will have no impact on the success rate using donor eggs. There are clinics without waiting lists so you would want to find these as some have two year lists.
It sounds like you didn't have a great experience with the clinic you went to - sounds like it was more of a sales pitch than true consultation. I'd maybe try somewhere else - I'm sure there will be some mn people with recommendations in your local area. There are so many things to think about before you embark on any fertility treatment that you need advice you feel comfortable with,
Good luck with your journey 