as cliche as it sounds, switch chars. theres nothing ylink can do.
Don't sink down to that level. Lmao, it's not impossible to beat Sheik, you just have to play extra hard in order for victory.
If your fighting a CG Sheik, then always keep your distance. Bombs, nairs, and arrows are all great ways to keep her back. If you do get chaingrabbed, which wont happen as often if your smart, then DI towards the edge until she can't CG you. Then, sweetspot hookshot your recovery so you don't get d-smashed by her.
lol, it's all right to fight on the ground-not gonna kill ya. Platform spaming works wonders but beware of Sheik's arials,i.e. fair or bair, have amazing hitboxes that can catch you off gaurd and will hit you HARD too.
Always stick to on side of the stage and move around the platforms, wavedash, and spam a lot. When Sheik gets to close, either stop her in her tracks with an arrow or start a combo up with a Bomb/Point-Blank boomerang and then rack up some heavy damage. If your attempt to start a combo is unsuccesful, THEN jump to the OTHER platforms on the screen.
Lol, Dream Land is one of the worst stages to fight her in due to she can recover very easily, you can't recover from the edge nearly as well as her, and it overall takes forever to kill her. To make it clear, platforms are good but aren't something you can always rely on in the heat of battle. FD isn't quite as bad as you think. Chaingrabbing is harder to omit from the battle but you can spam her to kingdom come and you can kill her pretty easily. IMO, FoD is prolly your best bet because the platforms are low enough for you to escape CG and she can die pretty fast in this level too.
Whenever she's recovering, nair her off the edge before she upB's and gets invincibility frames. This is actually quite hard in Dream Land/easy to do in FoD. D-Smash is really, really hard to pull off when for edgegaurding, trust me don't try it. Edgehogging is one of the best things you can do on the other hand. Oo, here's a cool trick to do, if your edgehogging, and Sheik upB's above the ledge onto the stage, she's in for a punishment if you ledgehop ->Dair. Yep, works like a charm!
Good killing moves are Bomb Plant(Bomb->Dair), Nair, D-smash, and dash attack.
The whole trick is to not stay in place and move around spaming, but LET sheik come to YOU.
Hope that helped!