Jumping in platformer

so I am making a platformer and I am trying to make the character jump but I can’t I tried flipping gravity but that isn’t very effective does anyone know how to make my character jump (smoothly)

There is an “object moving on platforms” behavior with the pre-made jump and move functions. But you can modify the default controls for the needs of the game.

Double click your player object
Go to behaviors
Add new one in search bar type remap
And add platformer remap behavior

Now to your platforms add platform object behavior

Remap behavior will automatically add platformer behavior to your player + remap behavior which will allow to change control keys by default they are WASD

And now in player platformer behavior you just manipulate values to your need like jump speed and gravity