I usually find some other series thats like 650 chapters long and read that which makes me forget all the other mangas/manhwas I was continuing so it no longer becomes a problem for me. But still 3 YEARS bro just end the story at that point.
And yeah what you said about isekai is so real. There is so much authors can do to just drag out the story to milk some more views, but the quality drops become insane when they do that. Like think about the most well known examples of stories getting forcefully extended: Star Wars and Naruto. They are both in such bad shape nowadays.
Also about that translation thing, I usually just drop it or skip some chaters to see if anything's better. If the translation is still trash, I just drop it (but sometimes I don't, idk it depends on my mood 😭) Btw how do you read the raws? Aren't they like in korean or chinese or japanese