I feel like this is how he survived By just landing on something

Haha

He didn't survive, he resurrected himself somehow.

Thrawn: Welcome back!
Palpatine! Where have you been? See meme

no he fell into the reactor so he died but had a clone of him that he transfered his mind into using the force

Yeah but then the Death Star blew up. Palpatine's death was the definition of overkill.