I took a follow up systems design interview last Friday but just now realized I made an error - I was querying the database base on user_id rather than another id, which would make the whole system work incorrectly. the interviewer was asking questions to guide me to this but I was flustered and in the moment didnt pick it up.

Is there anything I could do now to say "hey I know I made a mistake but I'm not entirely stupid, heres the correct way" or is it too late?

Follow up question - I think other than that I designed a banging system - kubernetes, lambda design principles, sharding, clustered columnstore, talked about tradeoffs with different design architectures, Oltp +olap+caching, ML components, talked about db design and replication principles - I feel like I did well except for this error, granted it was a significant error. Is it a definite no or is there a chance of a yes?

Edit: I also got an internal recommendation from someone significantly senior at Facebook.