Hey, thank you very much for the detailed feedback! I was originally planning to add a proper tutorial and clearer feedback but unfortunately ran out of time during the jam.
The main idea is that undercover cops give no payout and always lie in their hints. Eliminating an innocent card means losing that cards payout. Also if it was part of a "poker combo" you could potentially lose the combo bonus as well. So eliminating the wrong cards can make reaching the quota much harder.
If there are no undercover cops among the cards you played, then not eliminating anyone is completely fine. And there is a text which tells you if there are any undercover cops among heist cards.
You're also right that the game doesn't really communicate how good or bad your decisions were besides the final payout/quota. That's definitely something I'd want to improve with clearer indicators and feedback if I continue working on it.
And a restart button is a good suggestion too. Thanks again for playing and taking the time to write all of this!