Like a lot of mod supported games, Minecraft does not allow for mods to be used on the Ps4 edition of the game. The best you get are texture packs which are released through the online store. There is no way to use any of the cool mods you see on PC. I believe the same is true for all console editions of Minecraft.
The game was built to be hacked to pieces with mods. It is very easy to manage them on a PC. If something goes wrong, It wont impact the Pc and the game can be reinstalled easily. The same can't be said for a closed system that most games consoles use. Even games that do support mods, do it in a very limited way.
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