how do I format the whitelist/blacklist so that it only allows logs and ores to be mined?

The list should be composed of identifiers or tags between quotes, separated by commas

So if, for example, you want to filter dirt and stone you would use

list=[
    "minecraft:dirt",
    "minecraft:stone"
]

By default, the mod adds all vanilla ores (including deepslate variants) to the #c:ores tag
So to filter only ores and logs,

list=[
    "#c:ores",
    "#minecraft:logs"
]

can be used

When it comes to modded ores, you'll most likely need to filter each one individually like "mod1:silver_ore", "mod2:uranium", etc.

Hope this helps
If there's anything you don't understand, feel free to ask!

thanks that worked ! :)

I did the indiviual modding for the Mythic Metals mod but it doesnt seem to work in-game. do I have to specify some things In the confic to make it recognise it?

"#" should only be used for tags

On your config, remove it for every block except for "#c:ores" and "#c:logs"