Goldenwood Exploud puzzle thingy?

[Ender_Scott]

After finishing chapter 3 and ending the ghost tree disaster, i went around in search of places where i could use cut and ended up in the blocked off entrence of the Goldenwood forest, i found some cuttable trees there and went on through till i found a place filled with Loudred and an Prism Exploud in the end.

Although my pokemon are around level 35, i managed to beat the exploud (which is level 50) with the help of Mime Jr with soundproof.

After beating it, nothing happend, i thought that i would atleast recive a black prism from defeating the prism exploud, but not even that.

By the layout of the stones where the loudred were, id say this is probably a regi puzzle, so i probably dont even have whatever i need to make it come forward.

But i also think that i may have done something wrong since there are some ways that this battle could have happend.

1-I beat the Exploud without making it do that thing like where you make eye contact with a trainer and after that it yells and another one(like a clone comes out of him) comes after me along the loudreds(if i hadnt beaten them);

2-I beat the Exploud without making the eye contact thing after beating the Loudreds;

3-or i do the eye contact and the Exploud does a big yell, making it and the Loudreds go after me.

In the end, i belive that devs just made that part of goldenwood entrance assecible way to early and it confused me, since it looks like where you find regirock later in the game.

If anyone knows any information about the place, i would apreciate it it could be shared since i dont wanna miss out on some kinda of content that could happend there.

[Dred]

It's literally just there to be an obstacle between you, and the TMs. It doesn't do anything else.

[Ender_Scott]

Wow thanks, i guess i over thinked a bit lol

[PARCB]

Why can't we catch it?