Don't be that guy in creative writing class who can never use the word "said". Some authors have the mindset that they should never use said because it seems monotonous. In reality, most people don't care. It's far more distracting to come up with a new word each time. That being said, definitely use words in place of said as long as they're appropriate.
Oh thank god, it's a real struggle thinking of words other than "said".
Here's my take.
Don't promise readers what they want only to pull a bait and switch. If you advertise your story as being about a girl being humiliated, don't turn it into a femdom story once you're got your readers hooked and vice versa. If you spend 60 chapters building up to something, don't subvert it at the last minute. Readers will feel betrayed if you do that.
Avoid politics, it's outta place and distracting at best and leads to strawmaning at worst. Whatever side of the politic divide you come down on, you're just gonna piss off the people on the other side because readers wanna masturbate, not be lectured. Besides, who wants to read a story about Donald Trump fucking his daughter or one of Bill Clinton's sex scandals, no thanks.
Avoid writing Mary Sue characters, especially those that are "better" than pre-established beloved characters. This one mostly applies mostly to fan fiction writers and those writing in public stories started by someone else. I've noticed a lot of my philosophy applies to writing in general but people won't masturbate if they were turned off by the character herself.
Don't make drastic changes to characters that are not in line with their personality, skills or backstory. If the character is a naturally good natured person that has only harmed bad people that have mistreated them first, don't tell us that they have hurt innocent people in the past. This also mostly applies to fan fiction writers and those writing in public stories started by someone else.
Don't retcon anything unless you know what you're doing. This overlaps with the above. Canon is the foundation on which you build your understanding and investment in a fictional world. The more solid and stable it is, the more you can masturbate to it but every time some idiot changes come aspect of it, it undermines the foundation just a little bit more and eventually, you can't masturbate to it. Also mostly applies to fan fiction writers and those writing in public stories started by someone else.
Anything can be objectively accessed of quality. Feelings might be part of the process of critiquing but even something that's able to invoke powerful feelings in the reader, positive or negative, can be judged using facts and logic and can be found wanting if it's filled with plot holes, fallacies or breaks it's own established canon rules.
It is the responsibility of the creator to have the story make sense. If readers have to fill in the gaps and create explanations for inconsistent events, it shows that your story cannot stand on it's own.
If you write a sword fight scene, don't have a character use their hand or foot to hit their opponent. It implies the enemy was open, so the character should just use their sword instead. There are exceptions like combatants being in a bind that prevents them from using their weapons or if one of them doesn't want to kill the other.