LastPass doesn’t have your password, so it can’t be stolen during a breach.
But 1Password goes a step further, also requiring a “secret key”, which also can’t be stolen.
https://support.1password.com/secret-key-security/
Even if an attacker manages to steal your encrypted data from 1Password and also guess your master password, they still can’t access your data without a secret key.
For that reason, your 1Password account is more likely to compromised through your own device, not their server. And if your own devices are thoroughly compromised, no password manager can save you— the attacker can potentially grab all you type and see all you see.
I imagine BitWarden is sufficiently good. The big leap in security comes from having no password manager to a decent password manager.
LastPass does not seem as serious about security so it doesn’t meet my personal bar for decency.