Thanks again everyone, I used @BitMaxz link to download Tails OS and verified it on tails.net successfully. I have now booted my computer on tails os from the usb.

I have also downloaded Electrum and can create a new wallet by selecting 'Import Bitcoin addresses or private keys'. I just wanted to check one thing before I do.

When I start Electrum it has a message box that states 'Persistence is disabled for Electrum - when you reboot Tails, all of Electrum data will be lost including your Bitcoin wallet etc.' And it recommends only running Electrum when persistence feature is activated, which i don't know how to do.

If I import my private key is this just going to create a watch feature in the Electrum wallet to confirm there are funds at the corresponding bitcoin address? Which I can then check against the Bitcoin address with the funds on my blockchain.com account to confirm they match? I just don't want to sweep the BTC from my blockchain.com account and then not have access to the funds at the new Electrum wallet if it gets deleted when rebooting tails.