I can't defeat Cyrus in Platinum...

buy plenty of revives 由 beating other trainers find em with VS. seeker

how did 你 manage to get your piplup to lvl 50 if its holding a forever stone i sugest 你 take it of. But if not check the guide book and if 你 don't have one just lvl your pokemon up more.

你 need to evole stupid

K,u should level up ur pokemon till there really high,say about 80 或者 so.Make sure u teach them all really good moves.I have a Lucario and my fav 移动 is 'Aura Sphere'wich is both powerful and rarely misses.Starly should b taught moves like 'fly' 'close combat' 'brave bird' excetera,excetera.B smart,dont put defensive moves on ur pokemon,trust me,they dont help.

Hope I helped!<3

I can only say one thing... Train, train, train.

I remember playing 'Yellow' when I was smaller. I got SO mad whenever I 迷失 to E4, so I went to the cave in Victory Road and "killed"/defeated lots of pokémon. My 神奇宝贝 gained so much experience, that I had no trouble the 下一个 time I visited the Elite 4. . .

So the only 建议 I can give 你 is... Training, and teach strong moves to your pokémon.

Also

It's also very important to REALLY know how to use your 神奇宝贝 and it's advantages.
That's why there's so many people, beating those trainers who only have legendaries in their team. That's because they don't know how to use the legendaries (talking about 'BR'). . .

This is quite useful too.

(Edit: I 说 the same thing twice.)

Evolve Riolu, Bronzor and Piplup. Abomasnow will be use full. get rid of Starly, 或者 evolve it into Staraptor.

Each should be lv. 50 或者 higher.

okay, i don't get how 你 can't beat him, but i'd lvl up my abomasnow, as it's the strongest. 你 should also evolve your riolu.

I didn't beat Cyrus but...you might need a few items and train your're starly.That reminds of my pokemon because i don't envole them either.

thay need to evole;if your pokemon don't evole,ther moves will start to lack.

I'm not even as far as u, but i can give u some useful tips

1.Buy useful items such as potions, revives, oran berries,etc.

2. Train alot like me, i mean when i got my pokedex from Rowan my Turtwig was at level 18

3.Get useful types that moves are stronger like water, fire, grass, 或者 any type stronger than Cyrus's

4.Use the vs.seeker to challenge trainers that were really challenging

5. let your Pokemon ENVOLVE they get a lot stronger trust me i know

I hope these tips really help dude