I have been on Webtoon for just a few months because it did not workout for me unlike Tapas.
It doesn't matter if your art is good or not, it is just that readers and viewers have different opinions and they might like it or not just like mine.
The thing for webtoon is unlike Tapas, is heavily based on comics that contains a lot of LGBT's, those who have those will get bigger viewers,likes and subscribers.
But for those who don't have it in their comics well, some of them had a hard time getting what they want.
But maybe, just maybe, you might be in luck. I test my comics on both Tapas and webtoons and it turns out Tapas is the right choice. As for you, this is your moment to try it and see the results.
I wish for you the best of luck.