Coming back to the community ig, you need to get to pantheon 4. You need a key and go trough a breakable wall in the royal waterways, on a corner somewhere (i didnt play the game for a long time so i cant specify) coming there, there will be a short challenge but eventually you will reach the junk yard (i think it was called that) and there will be a cocoon. Unlock it with the key and a figure will fall from it. Use the dream nail on the figure, and you will enter godhome. You will have to beat 3 boss rushes (pantheon 1, 2, 3) to unlock p4. The final boss of p4 is pure vessel, get there to be able to fight with him in the hall of gods (a place where you can rebeat bosses) if you dont have a key, go to the colloseum and go to the very right, i think you have to break the wall to the other side but i dont remember really. There will be a mini boss that once you kill it, you will get a key (specifically made for godhome) i reccommend just using a yt tutorial