One of the more annoying reasons for Pokerogue's difficulty is that your early wild encounters is filled with normal types who can sweep you with stab tackle/headbutt/echoing voice but don't contribute much on your team since trainer battles are so well synergised.
*pats the lil whimsicott*
I still remember that lv 100 one I used which everyone always underestimated because they were too used to lv 1 stuff and thought lv 100 is useless.