It really depends on your genre.
Tapas is one of the better sites for Fantasy Romance, GL, and BL stories. Stories that are at least somewhat adjacent in plot/style to popular East Asian webtoons and webnovels aimed at a female audience. After all, those translated webtoons and webnovels are the main draw of this website, so the reader base here tends to like that sort of thing.
If you're writing litRPG or isekai stories aimed at a male audience (or to a lesser extent straightforward fantasy or science fiction), Royal Road is by far your better bet.
I share my novel on both (and on Wattpad) and I've by far had the most success on Tapas because my story matches the readership better here.
You may want to research what the reader base is like on different websites and look for one that matches your story. You have to find out where the readers who would like your story are already hanging out and go meet them where they are.