If you liked Clockwork Orange, watch The Substance, with Demi Moore and Dennis Quaid. The film is better than you would think as they are famous but they're razor on point in their lane as supporting cast. It is a disturbing, focused, well-concluded horror drama. (Warning: you cannot unsee it. It sticks in your craw like Clockwork Orange, 2001 A Space Odyssey, Apocalypse Now.)
Note: It is made for theater viewing, where people can't just tap out and be elsewhere in a second. That means it is uncomfortable, but intentionally so!