The best move is to look at what established authors and critics are actually recommending rather than chasing bestseller lists. Those voices tend to spot genuine talent way before the Goodreads masses catch on.
Beyond that, I'd say your taste matters more than the release year. Some debuts hit hard because they nail character work even if the plot's straightforward, while others succeed by having this wild premise that carries you through weaker prose. Since you mentioned feeling burned by rough or derivative stuff, maybe narrow down what actually frustrates you - is it overwrought writing, borrowed plots, weak pacing? That'll help you filter faster than just scrolling through 2025-2026 releases.
The communities mentioned in other answers are solid, but I'd also check small press publishers and literary magazines that highlight debuts. They're not as flashy as the big publisher releases, so they slip under the hype machine, but that's kind of the point. You're less likely to hit derivative work when you're looking at books that weren't built on a massive marketing spend.