I want to destroy my already frozen nfy

I got a buyer on twitter, he said he wanted to buy my 14 nft for 10eth, when I sent him all the nft he didn’t give me eth because I didn’t have eth to pay the commission, after discussion the buyer tried to pay the commission for me and they all went offline, my work was gone, now I have contacted opensea to help me freeze the nft, I want to destroy 1-13 them

You cannot “destroy” the nft’s (ie burn them). However you can edit the asset and metadata.