Interesting subject matter.
Iāve been on a few of these sites. Some from way back in the early 2000s.
Fanfiction has a sister site for original works named Fictionpress. These two sites were really good for serious readers back in the 2000s but their lack of flash and thunder make the sites less attractive to todayās readersā market.
Royal Road didnāt work for me the first time, and I deleted my account there in 2014. But I might consider trying the site once more.
The Submissions Grinder is a decent site to make some money off; if your submitted work isnāt among the high ratio of rejections they dish out every day.
Webnovel is a big no, no. Donāt care for their TOS.
Amazon is where Iād had the most success in terms of making money, mostly from print sales since I signed up back in 2016. And while KDP is good for making quick money from a vast readership base, the major con is that they allow people to leave low reviews scores after just reading a page or two.
The best source of making it big as a writer (if fame isnāt your thing) is Freelance work, for clients who publish in bulk on Amazon and other online sites.