It is not as much difficult as we think to make GIF in photoshop and here we will let you know how you can do it.
Images should be uploaded in photoshop.
Go to create frame animation in the Timeline window.
You will need to create a layer for each frame.
Choose to make frames from layers from the menu on the right side.
Select the duration for each frame and number of loops for each from the bottom.
Preview the GIF and then export your GIF to save.