oh.. this is XE. you need to google for ControlBear for Juopunut. not the latest Juopunutbear.

if you already s-off, the lock/unlock bootloader has no effect. it has been neutered, so to say. any custom recovery can write in bootloader once it's s-off.

s-off will let you write bootloader even if it's locked. you can do stuff like install new firmware and install ROM without unlock bootloader

unlock bootloader only let you install ROM with recovery that support it like 4ext where you need to enable smartflash. you need to root first, install recovery, than flash ROM. with s-off you can actually skip the root of your stock ROM and use ADB to install custom recovery, then use it to install custom ROM. way cooler.

it's not that hard to DIY. doesn't matter if you have not done it before, it still take luck on how many try you need. but eventually you will success.

unless you have severe muscle related disease like stephen hawking, you won't take more than 15 minutes for successful try.