1-Did you review your owner's manual, using SD memory cards, formatting them before use in your camera?
2-Are you using recommended memory cards? Precautions are mentioned against using other cards that may not work.
3-Memory cards may have a mechanical lock on them. Be sure to unlock it before inserting it into your camera.
4-Be very cautious of incorrectly inserting memory cards otherwise force may damage the card, camera slot and electrical connections - pins that mate to the memory card. SD cards have a chamfer to prevent inserting the card incorrectly. When inserted correctly, the chamfer allows correct insertion. If the card slot is damaged from forcing a memory card into the camera, there may be other damage that might require professional in repairs.
Here's a lonk for your owner's manual; https://dl.fujifilm-x.com/support/manual/a/fujifilm_a170_manual_01.pdf