With completely wireless earbuds, the rule is: when the battery fails, they have to be disposed of. Not so with the Fairbuds, that allow you to replace batteries in just a few seconds. Combined with a repairable design, the earbuds should therefore have an extremely long lifetime.
I have yet to use a USB-C to 3.5mm dongle for my phone that hasn’t gone bust in my pocket in a few months. Probably time to see about a cable for the earphones that terminates in USB-C on the phone end, but that was difficult to search for.
I love my wired ones, and have been nursing some BT earbuds for years, but it’s hard to use wired and not to move to BT anymore without buying a phone specifically for the 3.5mm jack.
Get a portable dac amp so you can connect your wired headphone over usb-c and upgrading its sound quality at the same time.
I’m the same, those dongles don’t last, and are annoying to use. I picked up one of these cables from aliexpress to use with my iems and it works a treat. There’s better quality cables out there, but for 10 bucks these are solid.