Alternative to the right mouse button on the laptop?

Is there an alternative without having to add a mouse?

So the mouse pad from the laptop only has the left mouse button (or always only hold one key) Can you do it somehow so that you have the letter keys and

right AND left mouse button on the mouse pad at the same time?

A laptop actually always has a right and left mouse button. The right one is used by pressing the touchpad at the bottom right if there are no additional buttons.

Otherwise, typing with two fingers also calls up the menu for the right mouse button.

Isn't the "left mouse button" and the right corner of the field not the "right mouse button" on the bottom left of the touch field?

A laptop usually has 2 buttons for right and left click on the touchpad (where you control the mouse pointer with your fingers). Without a mouse, you won't get anywhere else if you don't want to use the touchpad