Can Ledger access your private keys?

Excuse me, I'm curious about the safety measures of Ledger hardware wallets. Specifically, I'd like to know, can Ledger actually access my private keys in any way? I've heard that hardware wallets are supposed to be the safest way to store cryptocurrencies, but I'm still a bit hesitant. I want to make sure that my funds are truly secure and that no one, including Ledger, can gain unauthorized access to my private keys. Could you please clarify this for me?