Sorry for the late reply, but I create a new world every time I want to add a datapack. You can't add datapacks directly to one of your realm worlds. I have to go to singleplayer, create a world, add datapacks there, and then move that world to the realms. But sometimes I can't join that world in realms even if I can in singleplayer. I think the issue is because I have around 5 datapacks, and some are complex, but most datapacks aren't that exciting or interesting by themselves, so I want to know if anyone knows any good datapacks that work well by themselves and will probably not crash in realms.
