How to restrict certain things from generating with datapacks?

First of all, I was told I could ONLY do this with datapacks on versions above 1.18. I am using Forge 1.20.1-47.3.7 and I want to remove certian biomes and ores from generating in a world enirely. I did a bit of search and I saw some things that said I could not add exclusions and I had to include everything with custom parameters and I thought that was stupid. I just want to loop through an array of ores and biomes and exclude them from generating. These include multiple dimensions. I am new to datapacks and have no idea what I'm doing. I setup a basic datapack from a tutorial and I have a data folder and a functions folder and stuff.