By the advanced stats, there were zero seasons in which Kobe was the best player in the NBA. His best season was probably 2002–3, when he was fifth in win shares, sixth in win shares per 48 minutes, sixth in box plus-minus, and fourth in value over replacement player. From 2005–6 to 2007–8, he did win two scoring titles and an MVP, so some people probably considered him the best player in the NBA then. The advanced stats call him a top 5ish player in those years, but they already considered LeBron better. By the way if you like basketball I can recommend you to use https://777score.ph/ here you can watch matches and check live results.