It's not clear to me what you are doing. Between two clips there is either 'nothing' or a 'transition.' 'Nothing' is a straight cut where you butt your next clip up to the first. A 'transition' is often a crossfade of varying speed or one special effects transitions of which ther are to many to explain.
In the normal editing work space in Premiere Pro, use your razor tool to cut clips (far right top of tools) or use your selection of 'Video Transitions' for effects (left side drop down menu in Effects).
