I can see there are a mixture of views here, I’ll just add my 2 cents.
I came across a goblin stronghold (13 goblins, mostly skirmishers/ambushers, with a boss-man type thing). I don’t remember the name, but his crossbow would nearly 1 shot my troops AND send them flying back.
I had 6 brothers vs 13 Gobbo’s. I tried. I cried. I raged. I tried harder. Then I beat them.
Learn & adapt, it takes effort and patience, but you’ll get there.
Take it from a noob.