TUDIA Merge, Dual Layer Case Designed for Visible ZTE Blade A7 Prime (Metallic Slate) https://www.amazon.com/dp/B085FXF91L/ref=cm_sw_r_cp_api_i_41pyEbZ9FE9GV
https://www.amazon.com/dp/B085FXF91L/ref=cm_sw_r_cp_apa_i_ZJ39Eb5J0GA7R
https://www.amazon.com/dp/B07Z68VBPY/ref=cm_sw_r_cp_apa_i_NK39EbYXB402M
https://www.amazon.com/dp/B089CY5KSN/ref=cm_sw_r_cp_apa_i_eL39EbEYA5YRN
Here's some I found on Amazon for cheap. But these are just for prime 7 or whatever I'm not sure I quite understand the question, but perhaps these will still help.
TUDIA Merge, Dual Layer Case Designed for Visible ZTE Blade A7 Prime (Metallic Slate) https://www.amazon.com/dp/B085FXF91L/ref=cm_sw_r_cp_api_i_41pyEbZ9FE9GV
Here's one $15 on Amazon
https://www.amazon.com/dp/B085FXF91L/ref=cm_sw_r_cp_api_i_41pyEbZ9FE9GV
TUDIA Merge, Dual Layer Case Designed for Visible ZTE Blade A7 Prime (Metallic Slate) https://www.amazon.com/dp/B085FXF91L/ref=cm_sw_r_cp_api_i_41pyEbZ9FE9GV