But taste is subjective. Your idea of ‘not that great’ won’t be mine, as demonstrated by any thread on here.
I read reviews in the Irish Times, Guardian, LRB, will keep an eye out for who’s promoting a new book at local literary festivals or giving readings at the university etc, will note anything of interest from prize lists or ‘fiction coming out this year’ articles, or be recommended stuff by friends etc, as well as browsing in bookshops and knowing when a favourite author has something new out — but nothing’s an infallible guide that what I’m going to like. I will always read the free Amazon sample or skim the prose of browsing in a shop.
My most recent purchases were both recommended in an author interview in the Irish Times — Polly Barton’s What AmI, A Deer?, which is new, by someone who is usually a translator of Japanese fiction, and Gwendolyn Brooks’ Maud Martha, a 1953 novella by the former US Poet Laureate.
I’m also continuing to read/reread the work of contemporary authors I like but have not yet read all of, like Vigdis Hjorth, Sigrid Nunez, Annie Ernaux, Deborah Levy (which I warmly recommend!) , and classics I’ve never got around to (The Idiot, Hunger). Equally, there are highly-regarded authors I know I will never read another word of eg Philip Roth, Bellow, Hemingway…