That is always the "curse" he had, it is not just about not winning any trophy, of course he would love to win a trophy and he would be happier than any other player in the team but the reality is that his curse is not losing.
His curse is that both at Spurs and also at Bayern Munich now, he has been a top goalscorer and provided so much for the team, but because those teams loses, he is considered cursed, he does everything he suppose to do, he does more than what is expected of him, and yet he still is considered a curse for the teams by the fans. That is his real curse, we have seen him not deserve all of this mocking he is getting, he has been great everywhere and he is still getting mocked by the fans because of it.
The 'curse' narrative on Harry Kane is quite shameful. This is what makes many great players didn't get a proper recognition, because their teams didn't won trophies. Harry Kane has played for Tottenham for a long time, and it's not his fault that Tottenham didn't win any trophy since a quite long time. He has played for Bayern for one season, blaming him for Bayern not getting any trophy is so unfair.
People tend to exaggerate a bad side of a player, and this is not a good vibe in a sport world. Harry Kane can be said as the best striker at the moment, is even better than Erling Haaland, because he has all-around ability as a central forward. The team's fate shouldn't be attached on him, because the ability of palyers can't not be measured by the team's achievements.