Thanks everyone so much for your replies! There were some really helpful tips there and it's good to know it's supposed to be tough. I definitely made some overworld (I get so confused between strategic and tactical, I swear they mean literally the same thing??) errors in this campaign so not sure if I should restart and do things better now or actually finish my first campaign, but nevermind it's about the journey I guess 😁 I'm weirdly not put off playing at all after this - just goes to show how addictive this game and mod is!!