Saying you want a film to look “cinematic” is the same as going into a restaurant and saying you want your food to be “culinary”.
Cinematic is not a look. Cinematic is a result of detailed visual communication.
Cinematic can be anything. Simply by recording something on video, it is, by definition “cinematic”.
A filmmaker can make carefully crafted shots with shallow depths of field, consistent lighting, and deliberate use of a wide aspect ratio. Another filmmaker can create a found-footage style sequence that doesn’t do any of that. And both can be cinematic.
A cinematic look means that the filmmaker effectively communicated what they intended to, through visuals such as lighting, camera placement, camera movement, color, props and scenery, blocking, depth of field, and more.
So if you’re asking how to make something look “cinematic”, you need to ask what you’re trying to communicate in each scene, shot, or line of dialogue.