I know this is probably a common topic. For me, I’m not sure if it’s a “trope” or just totally misinformed writing, but it’s how many authors approach alcoholism. Some examples are Girl on the Train and The House Across the Lake, among HUNDREDS. If anyone else here has struggled with alcoholism, you know it’s not just "i woke up after downing an entire bottle of whiskey but was able to shower, down a cup of coffee, and solve a murder. "
To address the alcoholic stuff, you should give Stephen King a read if you’re looking for the horroric sides of uncontrolled addiction and its effect on people
It’s also about monsters sometimes.
As for tropes
Feels like cheap writing to not explain yourself