In general, the show is often using a non-stabilized camera. So not necessarily crazy shaky cam, but lots of instances where the camera is bouncing as someone walks, or filming with the screen tilted or wobbling side to side, etc.
Actual shaky cam: S1E5: Starting ~1:10 they're showing phone footage of a fight, lots of shaky cam.
S1E2: Main character comments that they would rather "go somewhere private and end it" around 17:55. The other character and the MC then briefly discuss suicide, using the phrase "you wanna kill yourself", etc.
S1E6: Characters discuss whether or not another character "killed himself" ~5:30
S1E5: During the fight scene around 22 minutes in, there is a lot of super action-comic-esque moves that involve one character breaking the arm of another character, etc. It's super cartoonish and over the top. You hear a crack but it isn't super graphic or gore-y.
There is a very brief discussion about god being imaginary. I'm not sure if that counts, but it is in the episode where they go to the kids birthday party.
S1E1 at 5:38-5:40 the main character gets in a mild fender bender. It is a stressful scene as he is driving around, but the actual crash is not even the main focus. You can see the damage to the car (some scratches and a dent in his fender) a few times after.
S1E1 Character takes hits from a bong- starts around 10:25
There is drinking and smoking of cigarettes while the main character is at a club partway through the episode.
S1E6: It happens at about 19:50 and the mom is the one who does it. It is super sudden and graphic like the other person said. If you want to skip the event, go forward until the main character is in his Ex's bedroom. But they continue talking about the event (using words like "vomit") until 21:00.
S1E1 from around 5:15-6:00, there are a lot of solar lens flares across the screen as the main character is stressfully driving and trying to look at something with what I assume is meant to be a glare/ the sun in his face. It isn't super rapid but it sporadically lights up the screen, stays for a second, then sudden leaves the screen before returning a few seconds later.