Coincidentally, I also use 2 USBs to store my private key and seed phrase. I always keep both very carefully, and it seems that only I know where it is, I am not afraid of losing it but afraid of USB problems. They are also technological products, and all have a lifespan, although they are hard to break, but I still want to be on the lookout. But to be extra careful, I also write them down on paper, just in case the worst happens.
If I'm correct, in most of the cases where USB is damaged/broken or whatever you say, can be fixed by data recovery services unless memory chips aren't damaged. But it's a good idea to keep the seed phrase written on the paper and it's even better if you buy a stainless steel metal box that is fire-resistant and unlikely to get damaged in a normal fire. use that metal box as a storage for keeping your seeds. There are a few metal box specially designed for writing down the seeed phrase. they are even better.
