If I can give you my 2 cents from game design side: You have 2 options here:
A) Give the player more clues: The player could ring on other doors to get information from neighbor about the client, ask people how he met infront of the building or listen to the police / news radio to get information about strange persons with a certein description ( in this case "We have again received a report about a man with headphones who attacked a cashier."). The information also must not relate to the current client, but to a following one that comes later.
B) lower the punishment: Currently you die if you choose wrong, you could also implement a health system (e.g. 3 times wrong descision and you are dead) or give the player disadvantage on the next client (e.g. you dont get stabbed but punshed and lose the option to go up to the client).
As someone how already released a game on steam (due it was kind of a flop it only selled ~500 copies, but I learned a lot) feel free to ask anything :) Steam games need 2 things,1) a good game and 2) good marketing. Your visuals are definetly a Eye catcher what is really good for marketing.