If you don't want to spend any money on a hardware wallet the cheapest is to use electrum [1] or a paper wallet [2]
Note that I don't trust web wallet as you don't have the PK (private keys) to your funds - AND NEVER EVER SHARE YOU MNEMONIC OR PK TO ANYONE!
If you are unsure what I'm talking abt, just follow mk4's advice as it is too risky for newbies too disclose their pk's.
rn im using bitcoin core as my wallet as im still unsure on how do i use bitcoin and how do i get them(ie mine some)..maybe i can use my pc as a mining machine while im sleeping but rn im clueless as what im doing:/