Hi Luis!
Your sentences are already really strong, but I’ve made a few small tweaks to make them sound even more natural in a casual conversational style. I focused on making them flow a bit more smoothly while keeping your original meaning. Let me know what you think!
He sheepishly admitted he hadn’t really put much effort into it.
Even the loud ringing of the doorbell couldn’t wake up the residents—they were out cold.
When I got back to the apartment, absolutely drained, I ran into some wide-awake partygoers ready for a night out.
Some say that only conscious citizens are really doing their part to fight climate change.
Since my sick son was out of commission, my other son stepped in to handle the chores.
I accidentally bumped into a lady on the street, and her annoyed husband shot me a death stare.
The teacher was super strict—she wouldn’t cut even the most apologetic student any slack.
Hope this helps! Let me know if you’d like any other changes.