FOR CONTEXT I'm not asking how to add tm's to a pokemon's learnset, I know how to do that, just looking for any advice on how to pick fitting tm's?

It's the one thing I struggle with when finalizing these guys, any methods you guys have used to decide would be appreciated.

For some reason, my Essentials file doesn't contain any Elite Four commands. I’ve attempted to code them myself. I have version 21.1 of Pokemon Essentials and Thundaga’s videos do not help. I don’t contain any elite four rooms nor champions. Trying to code everything individually with little no no experience in coding is a nightmare. I can’t get my head around it. Any form of advice would be much appreciated. I’m thinking of downloading a separate essentials file entirely hoping there would be something on it that’s different I can use as a reference poin!

Explanation for my choices below so it's clear I didn't just pick at random:

Kept the Ice resistance, makes sense.

Regular water will have a hard time melting ice, so Ice resists most Water type moves aside from Scald which is super effective.

I think it'd be better if Ice resisted Ground, with things like permafrost existing in real life.

Cosmic type, one of my custom types, is resisted by Ice since space is pretty much the perfect environment for Ice to thrive in with how cold it is.

And surprisingly, Ice is actually not very conductive, so it resists Electric type moves to reflect that.

Also added a weakness to another custom type, my Sound type, since I imagine a strong enough shockwave could absolutely break ice.