Explain Like I'm Five

Hello everyone, I'm hoping to gain some insight regarding a privacy concern. I'm always mindful of the possibility that my biometric fingerprint, which I use regularly, could be accessed by someone if I were compelled to use it. For context, I'm not a criminal or particularly tech-savvy, and I'm relatively new to the world of privacy and FOSS applications. I currently use a Samsung phone. I've found that enabling Lockdown mode at night without needing to restart my device prevents anyone from accessing my phone while I sleep. However, my concern stems from a different scenario. Recently, while shopping, I experienced a sudden medical episode and lost consciousness for about ten minutes. During that time, shopkeepers assisted me. I'm worried that in such a vulnerable state, if someone were to misuse my biometric data, they could gain access to all my passwords and personal information, which feels unsafe. While I do value the convenience of biometrics, I'm seeking alternative solutions. Is there a way to prevent my phone from being opened using my fingerprint, even in urgent situations, without completely disabling biometric authentication? Thanks in advance.