Excluding Nyaa or private trackers, as many ongoing and more obscure titles aren’t available to torrent. I’ve been using Comick and Weeb Central, but I don’t really know how up to date they are on new scanlations as I think they’re mostly aggregating from other sources?
If you’re on Android pick a Mihon fork, Komikku is fucking amazing with the Material Design themes and tons of other amazing features. Then add a bunch of extensions to it of the all the good manga sites, this way you can browse, read, download from tons of sources at the same time.
Works really great for NSFW manga/doujins/manhwa too.
If you’re on PC or any other browser based system, then just use one of these sites - https://fmhy.pages.dev/readingpiracyguide#manga