We still haven't lost all hope there are some good Isekai mangas, there are also good fantasy mangas that are slow life with one wife(it rhymes haha) though I also loathe harem mangas there are some good ones too where mc deserves the harem, the harem members are all having screentime, the mc genuinely cares about the girls that are part of the harem, harem mangas that are the same age or 2 yrs younger or older than mc.
We just have to sieve the slop out of the good ones
On one note I hate generic harem MC's those have the classic, basic and default build those black Kirito(from SAO) hair, the OP power they don't deserve and the same ass body build

I hate the harems extremely unnecessary. Mostly because the women don't become characters but stereotypes. Also why do asain comics insist on bringing in little children but don't lean into found family? Instead they turn them into a potential mates. Do you know how gross that is? Not to mention she was a slave (CHILD!!!!) before hand, she has no concept of good men or people in her life so she goes after the first one. This gotta be an unhealthy power dynamic. I wish every isekai author was a woman so they could actually write characters (and a story) without being struck by the spirit of the goon.