You’re doing everything right and sadly even the best cards go bad and get corrupted over time. According to the standards of flash memory they should last on average 10 years, but this also depends on how much and how often data is going through it. I’ve had a couple of my heaviest used sd cards go bad just sitting around. If the micro sd isn’t that old and hasn’t seen near as much data go through it I’d say you’d be fine with that. I’d be a touch hesitant to buy cards at storefront prices but if they price match and you’ve got time, it couldn’t hurt.
You’re doing everything right and sadly even the best cards go bad and get corrupted over time. According to the standards of flash memory they should last on average 10 years, but this also depends on how much and how often data is going through it. I’ve had a couple of my heaviest used sd cards go bad just sitting around. If the micro sd isn’t that old and hasn’t seen near as much data go through it I’d say you’d be fine with that. I’d be a touch hesitant to buy cards at storefront prices but if they price match and you’ve got time, it couldn’t hurt.