I honestly wouldn’t trust hormones from Amazon in any form, but I have heard that creams in general have a lower absorption rate.
If you’re not doing DIY, it’d be best to talk to your doctor about it, since they’ll know the best form and dose of it for you to take and you’d also be able to get it from a pharmacy then too.
One of my worries about hormones that aren’t from a pharmacy are that since there unfortunately are people out there who don’t like us, they may purposely make products to harm us (which has happened before, I don’t remember the name of that product though) or they may make products that don’t work to scam people who are desperate and trying to DIY.