Might be unpopular here, but honestly, self-published is a red flag for me. I do think that the major publishers are decent gatekeepers. That's not to say that I'm going to like every book by a major publisher, of course, but I do feel fairly confident that the writing won't be atrocious and the errors will be minimal. I would read a self-published book but generally only if I had a recommendation for it, either on here or IRL.
And to generalize even further, I can typically tell a self-published book from a major publisher just by looking at the cover. (yes, I do judge a book by its cover). If the cover is professional looking, I might assume it's a major publisher and spend more time looking at the rest of the product details.