Gluttony is when you eat over your maximum capacity, imagine a slave next to you and stuffing the excess food into you and envy...well envy is difficult but I guess..well actually idk and pride is when you are hubris
There is a 8th deadly but it hasnt been considered into the category of the deadly sin, but it's combined with the other sins, for it's Malvy-the desire something that you don't want or don't need get it just for the heck of it.