Whether or not you are actually fraudulent, the comments above me show you clearly appear that way. Especially in that in all your 'handmade' jewelry listings there's nothing to suggest you made it, no talk of 'ownership' to the design or creation process. No about page talking about your process or showing images of you at work, no other members of the shop mentioned who might be making this work to your designs etc.
I can also see rings the exact same design in related items at the bottom of some of your listings, so if you are making these you'll have to come up with more original designs instead of copying what's out there, otherwise you just look like you're just an agent selling mass-manufactured goods.
Then you also sell beads, which puts people further in mind of importers and factories (yes I know supplies are allowed). In addition to a lot of people repeating a problem with beads not looking like the images, and the huge amount of competition on here, I would not be surprised at all to find your sales have gone down or stopped.
On a different angle, if you recently started selling the jewelry it's going to be a long road getting sales as they're unlikely to be the same market as the beads, so you have to pull in a new audience. Your shop isn't known with the AI as converting for jewelry terms. The terms you are trying for are also very generic - 1 listing alone has the title "14k Solid Gold Diamond Ring / Dainty Diamond Ring / Thin Diamond Ring / Gold Diamond Ring / Three Stone Ring / Simple Diamond Ring" - those are all very broad generic terms that have a ton of competition which is all ranking high in those results because of their sales, so you're unlikely to be seen.
