Recording midi files

Please forgive my ignorance on this topic. Can anything be done to make midi tracks sound less fake? Can the midi drums for example be replaced with audio loops? Could other midi instruments be replaced with virtual instruments? I’m asking because I have some midi files that I made and I want to record the midi files and vocals in a professional studio and I’d like the tracks to sound as natural as possible. Before I start calling studios I’d like to be able to communicate what it is that I want. What (if any) software should I ask to get my midis to sound more natural?

Thank you in advance