Please, help me with some feedback on my SEO

[UnicornArtsDesign]

Hi guys,
I could really use some help with my shop (https://www.etsy.com/shop/UnicornArtsDesign)- since April I have almost no sales. The number of views dropped with 50%. Before that I got on average 2 sales per week- not much but still something. I guess it is something related to the etsy SEO changes in 2018. I watched all the video, made changes accordingly (at least I think I did) but it did not help. I would really appreciate some feedback on my SEO and any other stuff you could think of. Thank you very much in advance 😊

[MustafaGems]

https://www.etsy.com/in-en/listing/631375210/136carat-super-top-quality-dashing?ref=shop_home_active...

https://www.etsy.com/in-en/listing/631384392/190carat-super-top-quality-dashing?ref=shop_home_active...

https://www.etsy.com/in-en/listing/631383046/40carat-super-top-quality-excellent?ref=shop_home_activ...

https://www.etsy.com/in-en/listing/645210343/135carat-super-top-quality-dashing?ref=shop_home_active...

https://www.etsy.com/in-en/listing/645212647/aaa-grade-top-quality-excellent-natural?ref=shop_home_a...