impossible gameplay tactics on XL.

By the way, I forgot to follow up on the main point. Forget about Gelar, just take Grindan. You'll get the same 350 per day, but more importantly, you can get Expert Slow very quickly. Then, as I understand it, you're playing without rules, so you can improve your Fae, and with some skill, you can essentially kill all slow-moving monsters without losses. And when you upgrade Earth to Expert (if you're lucky, you might get it on the first day) with Expert Slow, you'll be able to take down anything. It will take a while, but it will happen. Bite, they fly away, bite, they fly away. :D Then, the main thing is to get the birds and everything will be fine. Although, maybe it's worth upgrading Air as well. By the way, if you're playing completely without rules, it's better to take diplomat heroes. Upgrade diplomacy, have a little strength and luck, and just go around recruiting everything for free. You can gather such an army that growing units in a city can only dream of. Try Adele, she has the Blessing skill and specializes in it :D, you love it so much, but the main thing is diplomacy.

Added 2 minutes later
But, as Marmot rightly pointed out above, the main thing is practice. And, of course, analyzing games. Watch streams if you're not lazy, and play more often yourself. You'll get the hang of it, and everything will come naturally, if you want to