Opening Suggestions

Can anyone suggest a good opening for my level and maybe share a video to explain it?
As white I just play e4 all the time and I think I need to move on to a more advanced opening.

Against the Sicilian I play the Grand Prix attack.
Against the Caro Kaan I just play the position after 2. d4
Against d4 I play the Kings Indian Defense.

@PurePremiumPenguin funny enough im myselft moving to e4, make sure you know your repertoire by heart, than there isnt any holes and than lets say against the enlight or smth nf3 move order you dont just improvise.

try mixing up as black play a pirc or french defence... as white with e4 try a vienna, bishops opening.. go for an evans gambit