Nagelsmann wouldn't be a bad choice in case Conte leaves the team in the summer. Nagelsmann is actually a really good coach I mean. He had a great time period with Leipzig you know and this was the main reason why Bayern Munich wanted to bring him to the job there. They even made a huge contract with him at the same time. But it is really interesting to see that they have parted ways with him although he didn't even complete his second year with the team.
But I think this still doesn't change the fact that he is a good coach. Tottenham should try a change truthfully. Pochettino is also rumoured maybe but a change might be good for them. Because they weren't winning titles with Pochettino anyway.
Nagelsmann is still very young. Despite this, he has a style that is admired by many, even if his squad is not very strong, he knows how to guide the team in the most beneficial way and win the matches.
Managing a team like Bayern is not easy, if you are managing a team that has dominated the league every year for many years, you need to continue this tradition. That's why I'm not surprised that he left the team, he was in charge of a very difficult team to manage.
If he leads a team like Tottenham, I think he can be successful