SPOILER ALERT!
This movie is like a modern art, people who like it will not admit they do not understand it and those do not like it are accused they do not understand it.
Movie market is apparently oversaturated with time travel and parallel universes so how about inverted entropy? Have you heard about it? No? Do not worry, it is yet another term to justify time travel, parallel universes and complex, complicated and confusing plot. Even the movie says "Do not try to understand it". With this story presupposition plots and time lines get overentangeled and if you add "Spy movie"-like ingredient to it you will waste your time watching it.
As you can now see, I do not like Tenet cos it is too complicated. However, all kudos to Pattinson´s and other actors´performances. Really only bright spot of the movie, I enjoyed it cos I lost the plot track half way and could not "reconnect" to it again.
I cannot rate it good cos I did not really get it.
And I enjoyed Inception and Interstellar so much!!!