Depending on the style of comic you're doing there's different websites that you can use.
If you're doing it "webtoon style", meaning one really long page that you scroll through, usually made for phones, then you should use Webtoons or Tapas or other apps similar to that.
For "traditional" webcomics, where you have to go page by page, I recently discovered this website called ComicFury, there's also GlobalComix.
I would also look into the Clip Studio Share platform if you want somewhere to host your comic but don't want an entire website around it. You don't need to have the Clip Studio program to use the platform btw, it's free.
If you'd like to make your comics into PDFs and sell them individually then you can also use the comics section of itch.io
Hope this helps!