I want to make a game teaser for my game

I need to make a game teaser for my game, but i don’t know where to start . I tried to search on google and searched for tutorials on youtube but couldn’t find any signle tutorial or hint so please suggest any tutorial etc if you are familiar with it… By the way teaser means short introductory video of the game if someones get confused with the word

You can use the “Timeline” option of Unity and “Cinemachine” to make your teaser, you can search tutorials of the options in the documentation of Unity.