I've had a YubiKey5 which uses the standard USB for a while and never had issues. They’re also cheap enough to replace easily but I doubt it'll break by it being in your pocket with other keys unless you severely bend it or something.
The USB-A versions are practically speaking indestructible. I've had them for over 10 years now without any problems.
The USB-C versions look much more fragile though...
They actually feel very robust. I've been carrying mine around on a keychain in my pocket for a year now and it works flawlessly.
I had no issues with the one one my daily keychain, which has been there for 2ish years now.