I had restored my ripple which I got in 2013 by secret seed . So I wrote an article experience: restore-ripple-by-secret-key.
The main point is use `ripple-keypairs` node lib to get your public Address, keyPair.
const r = require("ripple-keypairs")
const keypair = r.deriveKeypair("shqa2QYiJ1wcizZdV3WeiLeL7L33d") // replace shqa2QYiJ1wcizZdV3WeiLeL7L33d with YOUR SECRET KEY
const publicAddress = r.deriveAddress(keypair.publicKey)
console.log('publicAddress: ', publicAddress)
console.log('keyPair: ', keypair)
Then you can import your funds into other wallet which support XRP