LEDs are burning out quickly
I'm pretty sure it's a quality issue, possibly exacerbated by minor power issues that probably can't be fixed.

Several years ago, I found a 2-pack of bulbs at Costco. They were LG bulbs and pretty pricey ($15/bulb if memory serves). Other than having my kids break the glass cover (bulb works fine), those bulbs have lasted through years of regular use.

By contrast I bought a 12-pack on a Black Friday sale a couple of years ago. While some bulbs are doing just fine, I've had to replace 3, although one might have been due to a dimmer that was on one fixture before I swapped it for a normal switch. I've even had some cheaper "branded" bulbs burn out on me within a year.

So what gives? There's a few reasons why cheaper bulbs burn out quicker. The largest is that LED bulbs have to perform a power transformation before they can power the LEDs. Cheaper bulbs invariably means cheaper components to transform that power. Add in that your house might not have the best wiring or random power fluctuations and you have a recipe for disaster for these cheap components.

I would check your voltage to make sure it's steady. If it's not, buying a dimmable LED for those locations might be advisable. Because they're built for the power change they tend to have higher quality power transformation.