SP datapack

Hello, i need help making SP datapack with no ore blocks, no caves, no ravine and no lava. I just want normal generated MC world just not including those stuff. My problem is i manage to make datapack using chatgtp but once i make new world and go to more option and open datapack and put my data pack inside nothing is showing.... and i folow every step... could it be because am using mod such as conquest reforge or tectonick mod for terrain... i honestly dont know