Improve Security of Hardware wallets

After the coldcard hack, I am Glad that I never had one, and the only Reasons where that I didn’t Like the Fact that they dont have a screen to check transactions and they where Not popular in Europe where I live. So Right now I am good with my cold Storage but I am wondering how to improve the security Level?

I see that people that survived the hack where lucky because they used a passphrase, from what I understand the main argument for passphrase wasn’t to improve entropy but was to be more secure in case of stealing and robbery.
So what are my options if I already have a single sign wallet like trezor ? Multi sig? Add passphrase? Something else?
I am not really afraid of robbery In real life, I am thinking more about reducing the level of trust into a wallet company.