Im looking for a story where buffy is a lot more powerful than any slayer.And/or more in touch with her demon side

If this is a specific fic you are looking for it might be Chosen After Death by jackofspikes.

Follows canon up until the Frat party with Parker then goes AU. The essence of the Power that was used to create the First Slayer has rested within Buffy since her first death at the hands of the Master - It's about to make itself known.

I've read that one actually I was trying to see if there were any more stories like it.

Oh, OK, you want to put general recommendations requests in a 'fic rec' request then rather than a specific 'find-a-fic'.

These are fics that might be right...

Blood Warms The Heart by bloodshedbaby/tanitkd
Summary- What would happen if Buffy reacted differently when Spike flashed his gameface during Fool For Love? Naughty Buffy! Spoilers up to FFL. Warning-bloodplay and bitey goodness

Blood Bound by DreamsofSpike
Early Season Four, immediately after Spike is chipped, Giles finds an ancient ritual that could solve their problem of what to do with the not-so-harmless vampire...but Buffy ends up getting a bit more than she bargained for in the process.

Forever by spikeskat sequel Forever Again
Set in an A/U AtS Lineage. Buffy is in Rome missing Spike. Spike is in LA missing Buffy. He decides to go to her to see if she wants him in her life. Good thing too, because there's a new Big Bad in town. This link to the series includes a short Willow's Birthday

Primal by Kari Mouke
Challenge #24 states that instead of turning people into their costumes during Halloween, Ethan puts a spell on Buffy that turns her, Spike, Angel, and Drusilla into their most primal selves. This story takes a left turn from Wulfie's instructions but he said I could be as loose with it as I'd like.

The Demon in Me by Spikeschilde
After a sharing her night of passion with Angel, Buffy is thrown into a situation she never thought possible beyond her wildest dreams. Forced to learn to live with the changes within herself, she finds comfort and understanding in someone she never had thought of as anything but a monster.

Twenty-one by kantayra
Irresistible lust toward a certain peroxide blond vampire overcomes Buffy in the week before her twenty-first birthday. So what choice does an ultra-horny Slayer have?

Guardians of the Scythe by athenewolfe
Post S7 Buffy and Spike have both died leaving a prophecy unfulfilled. The Powers That Be decide to reward the Champions by allowing their memories, along with a few extras, to be returned to their past selves. How will Spike and Buffy react to their new lives, their old friends, and a set of memories of everything that is to come?

Replacement by sus
After years of struggling for a life of her own, the immortal Slayer is finally free from the demands of her friends and the Council. Will she be willing to go back in time and do it all over again, just for the chance to be with the vampire that was always meant to be her other half? An enemy from the future will give her the chance, if she wants it.

Trust by jackofspikes
This story was written with the prompting of my wonderful beta Spikeslovebite and my friend Maryperk for LJ 20_hot_prompts. It follows canon till the episode Lover's Walk then moves off into a whole new direction. Could be considered PwP.

Oh okay thank you.! These are just what I was looking for

I moved it but please pay attention to where you post your threads. Thanks.

Glad to help.