Have you read http://www.mangago.zone/read-manga/haru_wo_daite_ita/? Is completed, and is quite long, if you are looking for something that will keep you busy for a while.
The only ones that actually keep releasing continuously are webtoons, so I recommend you to hook on the train and catch them all (lowkey that's why they are so popular right now, because of the fast releases). You have things like Killing Stalking, How Sweet is a Sugar Daddy, Here U Are, Sign,... well, everything in Lezhin.
P.S. I understand so hard your strugle with Finder and Saezuru: I can barely keep on with Finder, but Saezuru has such a complex story that last time a new chapter was upploaded I didn't recognize almost anybody. (╯°Д °)╯╧╧ There are a lot of amazing and long mangas, but yeah, almost all go by one chapter every 200 years, It's pretty frustrating, but oh well.
following
btw have you read katekyo?
Yeah, I have read haru wo daite ita and katekyo. I am a hardcore fujoshi and reading yaoi for 8 years almost every week. (●￣(ｴ)￣●)
Hello Fujoshis ヾ(☆▽☆)
So I am having trouble to find any completed yaois with a great amount of chapter. But I also hate to read smth that is continuing. For example, I am reading Finder series and Saezuru... for almost 5 years. The last time I read them was November 2017 and now there are only 3 new chapters for each. Σ( ￣□￣||) It is really frustrating. I always forget what I had read, and with each new chapter I read the manga from the start.
However, since I cannot find any completed manga anymore, I am planning to start some continuing mangas. What do you think? Do you have the same feelings as mine? Are there any long and popular mangas that release new chapters weekly or monthly?