Many chess players have gone years without making any significant improvement, even after studying many chess books, courses or hiring personal chess teachers. Many players get stuck below or around the 2000 rating and, little by little, their initial joy for the game diminishes.
IMPORTANT: You cannot improve at chess by any means. No-one improved at chess by just watching 2-hour videos or by buying courses or books like “ultimate…”, “how to beat…”, “secrets…”, “grandmaster over-night”, “quick…” and so on. NO, chess improvement means high-quality chess lessons, professional written courses, individual work, positional training …and a bit of talent.