•what's your average writing is speed ? Are there ways you are able to write faster?
•how are you able to better flesh out you charector and the world?
•what are some early mistakes you did as an author?
•how much detail is too much or too less?
•how are you able to create new names which fit the world perfectly?
1, it really depends. I listen to music through sound cancelling headphones. when I get into a groove i can write 2-3 chapters per day (i don't measure in words per minute, as the story takes priority over how long each chapter is), but i'd guess it's somewhere around 50-60 wpm last time i actually used a measuring software.
2, keep a character and world list separate from the story and reference it often. have everything relevant listed there. if your character's father was absent and it won't have any effect on the story, don't include it on the list. focus solely on things that'll matter. furthermore, don't flat out say "he's impatient". show it by making him unwilling to sit through long dialogue patiently.
3, inconsistent posting times. try to always post within half an hour of the same time. and if you can, try to pay attention to when people interact. if people interact 2-3 hours after it's posted, try posting it about 10-20 minutes before their usual interaction times. most readers won't come back to interact later, and having it higher on the "recent updates" list during the heights of your interaction times is the most ideal. that said, if you can't post later, then keep consistent times. if people know WHEN your story will be posted, it'll make it easier for them to find the time to read it.
3.1, inconsistent chapter lengths. this may be contrary to what i said earlier about the story taking priority, but this is important. try to keep your story within about 500 words each chapter. if one chapter is 1500 words, and the next is 750 or 2500, it'll make it harder for your readers to gauge how long it'll take to read. this will make it harder for them to set aside the proper time to devote to your new chapter. in this regard, if you MUST change the length, i'd recommend splitting a long chapter into 2 shorter chapters. it's easier for them to keep track of where they are if they have a clear stopping point.
4, detailing is entirely up to you. think of it like art, some of the best doesn't explicitly show ANYTHING, and merely hints at it (think of japanese ink paintings or modern day watercolor paintings. other masterpieces show a little too much detail, and THAT'S the appeal (van gogh and picasso do this). in terms of novels, i'd shoot for somewhere between a 3rd grader's report, where they glaze over detail and late robert jordan, where he spent 2-3 pages describing the most mundane, intricate details. just enough to paint the picture, but not so much that you rob the reader of their autonomy. people read so THEY can imagine the characters their way. you could try a few different styles and post a poll in a one shots book asking for what your specific readers prefer.
5, naming schemes and name generators/AI suggestions. specifically, i use naming schemes for demi-humans. foxgirls are always named after alcohol, and their personalities match the alcohol in question. wolfgirls are named after precious stones and metals. things like that. name generators, i use Fantasy Name Generator for humans and non-humanoids (or related), depending on what style of culture i want the character to be based on. most of mine are fairly viking related, though I've also used others, like normans, jewish, egyptian, etc. When I hit a real roadblock, i have an AI app on my phone i use to run ideas by or to ask suggestions. that's how i came up with using stones and metals for wolfgirls, though the foxgirl/alcohol thing is entirely my own, and started with a one shot i did with a foxgirl named Bailey. Key here would be to not worry too much about names "fitting" the world. If you say the character's name is XYZ, then it's XYZ. it'll fit, unless the lore of your world says XYZ is evil for whatever reason.
*I want to note that these are my own experiences, and i'm far from a big name author, so i may or may not be doing things wrong.