I take it you're not a fan of the borrow rules?
Would you rather manage your memory yourself, or would you rather use a language with a runtime?
Those are your only 2 remaining options for managing memory if you exclude rust-like reference constraints.
Choose an operating system (common choices for newcomers are typically linux mint or ubuntu, but your choice of OS really doesn't matter imo). Burn the OS image onto a flashdrive, and boot into the flashdrive. Then follow the install instructions onscreen.