Amazon.com: SanDisk 256GB SDXC Micro Ultra Memory Card Works with Samsung Galaxy A50, A40, A30 Cell Phone Class 10 (SDSQUA4-256G-GN6MN) Bundle with (1) Everything But Stromboli MicroSD and SD Card Reader :
Amazon.com: Everything But Stromboli 64GB Azaire MicroSD Memory Card & Adapter Works with Samsung Galaxy Phones A Series A10, A10e, A20, A30, A50 Speed Class 10, U3, UHS-1, SDXC Plus (1) Micro
Samsung Galaxy a50 SIM Card & Micro SD How to Insert or Remove - YouTube
Galaxy A50/A50s : How to Insert Sim Card & SD Card (Dual Sim Model) - YouTube