>>33851xor is not hard enough though xor is a gigachad and very useful
<just use luks. do NOT USE
bitlocker,
(((they))) store copies of the keys on their servers and have given them to the fbi before. it also doesn't derive the key every time you want to actually read content. what do i mean by this?
think this, an aes key is just a big number. windows stores the keys in tpm or whatever. instead of that, (and what any reasonable person does) is they derive the key from a phrase. a password. by using a hash function like sha256 (use argon2d really) to get some constant length random number from your password. e.g. a diceware password (a bunch of random words, easy to remember)
also, use luks, use linux