What if a bridge gets hacked?

First I'll admit to being no expert, so please correct me if any assumptions are wrong.

Say I have real ETH and I bridge it to e.g. Secret Network. I'm not sure if there are multiple types of bridges, but my feeling was that you essentially deposit into the bridge contract and then some "pretend ETH" on e.g. Secret Network is minted. Due to it being 1:1 the price is the same.

Now say the contract on the Ethereum side is hacked and the ETH is no longer there… now what? There may be millions of "pretend ETH" now with no real counterpart.

Is it safe to assume that the "pretend ETH" would now quickly move towards zero value?

Are there other better ways to do bridges where you don't have this real/pretend scenario?

Thanks for any insight!