you can write short chapters if you want to, by the way
just in case somebody told you different
so, for reference, lots of published novels and this across most genres (talking romance, fantasy, scifi, history, horror) tend to work with the guiding baseline of a comfortably readable 2500-3500 words per chapter for your regular 90.-100.000 word work (often in range of 50.-135.000 words, with a range of 15-40 chapters), and 5.000 words is already considered quite unusually long for one single chap.
now, apart from endlessly ongoing oneshots, some of the longest multichapter fanfics I've personally read were between 750.-900.000 words long in their entirety and some of the longest chapters were all in one multi-chap work and consistently around 20.000 words long, intending to emulate the amount of content/events happening inside of a whole 45minute TV-series episode..
on the other hand, some of the shortest works I've ever read were mostly original Haikus or FlashFictions, like One-Sentence Stories or Drabbles of exactly 100 words.
in contrast, my own chaps usually range from at the very least 550words (in those sweet 5-Things short stories with single scenes that I post in separate chaps) up to about 2000 words, and this has the simple reason that I first started reading FFs back in school and when having double lessons we usually got a 5minute break inbetween the two 45minute lessons AND in that time I was able to completely read 1000-1500 word oneshots and chapters fully to the end, AND it works just the same these days when I join people on their 5 minute smoke break, so that's just the basis of 'amount of words in one sitting' that I got used to see..
like, as a reader, of course I love a lot to read ... however, I don't particularly enjoy to have to read one single chapter over like 10 points in time across 2 days simply because I cannot for the life of me get even 30 minutes of free time at a stretch until 3 in the morning with my alarm set to go in 2 hours and the accumulated lack of sleep of a week dragging my eyelids down..
so while, just like me, everyone else also has their own preferences and reasons for their chapter length like scene length and story pacing and such, let me reassure you that yes, there might be people who sometimes appreciate a 2.-3.000 word chapter far more than 9.-10.000 words one (or prefer clicking through 50 chapters to losing their place in a 70.-90.000 words oneshot)

























