After I got the screen replaced on my previous phone the fingerprint reader didn't show up, and I didn't bother to try fixing it. I hadn't specifically requested a new panel with fingerprint reader, but supposedly it could be enabled, if available, through tools Google provides for Pixels with their Tensor chips. Apps that would otherwise use the biometric authentication can fall back to a pin or pattern, but all of my banking or work benefit-related apps will not save credentials in that case, so I have to rely on my password manager which will use the PIN/pattern for authentication.

I replaced that phone with a new one and didn't bother setting up the fingerprints. It doesn't seem to bother me too much and maybe there's some small security benefit to not having the biometric authentication enabled.