How would I separate my glass and lcd from the digitizer?

First off that is not an lcd it is an Amold screen that is oled and that makes the job harder. Amold are used because they are much thiner. The oled is the expensive part so just buy the whole assembly. But I will still answer the question. You would need a digital temp controlled hotplate to heat the gel that glues the screens together then cuting wire to seperate the screens and then a desolving agent to remove the extra gel. Then you must glue your new Amold oled screen to your old front glass and digitizer and then the glue must be set using a uv light so that the glue can be trigered from under glass like how gel nails work. You can skip the glue but the screen will look foggy and dull. A cheap digital hot plate costs about $100. Cuting wire is cheap and so is the glue. The glue must be applied in an x pattern and the screen lowered from one side to spread the glue evenly with no bubbles. Be carefull with the solvent that removes the old gel. If the solvent gets on the underside of the Amold screen it will destroy it so clean the digitizer well. The heatplate helps when opening the phone too since the phone is glued shut.