Ask HN: How to secure passwords on iOS or in general?

In light of iOS and Android being surprisingly vulnerable to NSO exploits and such, I'm concerned about my passwords and other sensitive data. Currently I have Bitwarden on iOS, which is convenient, but carries a risk of total compromise if someone were to use one of those exploits on me.

What can I do to protect my password manager? Ideally this would probably involve something like a hardware crypto wallet but I'm not sure something like that exists now.