I moved my BTC from Binance and Coinbase to Trezor. What happens if the Trezor Wallet breaks?

I asaume Trezor HW Wallet must be having some chip or circuit inside.

1) Can Trezor HW break (or stop working) ? Is there any gurantee like waterproof or fireproof type thing ?

2) Anyway one can retreive BTCs in such case ?

3) Does Trezor as a company also knows about my BTCs ?