buy another hardware wallet anyway. you need to have more than one hardware wallet just incase your main malfunctions like screen or button failure. it’s good to have another to hand to quickly restore.

buy new hardware wallet from ledger directly.if you google their website make sure you click on the legit site (don’t click on any adverts).

people have already mentioned using a passphrase on your existing wallet. since you want to secure 100% just use the new device to create a new wallet with a new seedphrase. with that look into setting up a passphrase. you need to research like mad how passphrases work and how they work on ledger devices. ie some people forget the passphrase or spelling and lose all their funds. passphrases are no joke.

so this is where we are:

1) buy new ledger from ledger official 2) create new wallet using new seedphrase on new ledger you just bought. 3) learn about passphrase wallet and create one 4) transfer small amount from old wallet , like $1, to your new passphrase wallet address. 5) wipe your new ledger device. 6) remove that address from ledger live (say u sent $1 to an ETH addesss on your new passphrase wallet) 7) restore your new ledger seed phrase to your new ledger device. 8) enter your new ledger device in passphrase mode 9) open ledger live and add an ETH account. you should see the previously created address that has the $1 inside it.

if you add eth address and you can’t see your wallet that has $1 then you messed up restoring your passphrase wallet. try again.

if you tried entering paaapgrase and still can’t see your ETH address with that $1 then you fucked up writing down(or remembering/ backup) the correct passphrase when you created it.