Pixelmon Mod

Please allow us to change it without using datapacks, I know nothing in technical side of minecraft so it would be a miracle

Creating Datapacks is as easy as Resourcepacks are.

The initial setup is explained in detail on the Minecraft wiki: https://minecraft.fandom.com/wiki/Tutor ... _data_pack
Beyond that, you simply copy the file you want to edit from inside the Pixelmon mod file (can be opened like a zip archive) and add it under the same path inside your pack, where you can edit it however you like. In the case of the Daycare it would be in "data/pixelmon/daycare/".
Then you apply it to whatever world you want to use it on: https://minecraft.fandom.com/wiki/Tutor ... _data_pack