Lil' Sunny

i'm like 90% sure inherited stats are absolutely random unless a parent holds destiny knot/power item

Midday lycanroc properly EV trained should be nuking her entire team with Rock Slide afaik. Trick room is a great help here and iirc you can catch Bronzong just outside calcenon which with heatproof should be able to take a hit or 2 and set up trick room, amplified rock boosting it to 8 turns is great too. After that just throw slow heavy hitters like Rhydon at her. Alternatively Walrein. You can by that point catch Spheal in ametrine mountain I think. and with thick fat, blizzard and surf it can damn near solo her.

First Impression go brrr

Platinum had a battle frontier with 5 facilities including the tower so yes, it did postgame better.

Dusk. only loses a few speed points over midday while having more bulk and still having its signature accelrock.

First, you dont need 2 steel types and Steelix just isnt good. I'd swap it for another rock or ground type like Lycanroc, Garchomp or Rhyperior. Rest of the team is alright gren and metagross are pretty solid. I'd say Metagross wants bullet punch over bulldoze and maybe hammer arm over brick break. Lastly i'd put Wish on umbreon if you can over Moonlight. if you add protect too, or just predict well. It heals the same amount but 1. isnt affected by weather and 2. can switch out to heal a weakened ally.

Monotype from my experience starts difficult if you haven't played the game too many times. But after a few playthroughs becomes much more manageable as you remember upcoming major battles and prepare items and movesets accordingly. For example from my personal experience. Storm Drain Cradily for Amaria in Rock Mono

Here's a plan 1. Mega Aerodactyl 2. There is no 2

Me who's only complete save file on my new computer is a Rock Monotype run: Seriously though, a box full of rock bois and a fairly balanced team of Tyrantrum, Mega Aerodactyl, Tyranitar, Kabutops, Lycanroc-Dusk and A-Golem should do well. I've got plenty of others waiting too.

EV items and berries are both available on different floors of the dept store, if you didn't pick them up then sorry you're SoL on that front for a bit, you can get some decent ATK EVs on route 2 just outside the circus and the riolu event in ametrine lets you get Lucario which along with a good electric type and maybe a water type should be able to beat him. for level grinding, clown indra in the circus works great, he has random teams of 3 which give good exp and you get a free shard every battle, stockpiling those for 7th street mons and move tutors later is great.

you can still get it. residual energy is the explanation

i mean. if it has to be 4x weaknesses or nothing then thats a bit stupid. but if its just type weakness in general it's much more doable. Julia gets bodied by goldeen, from pulling an ice-mono run i can tell you beating charlotte and tania is pretty simple in concept (not so much excecution) however fighting Samson with no jynx, tania with no lapras and charlotte with no walrein might be a bit tougher. So it's probably possible

There's a point where everything is EV trained. until then its usually just their ace.