It’s similar to console hacking. If there is no known exploit, the device is not yours. LG patched the exploit that made that possible for my smart TV and know I need to wait for another to be doscovered. Unfortunately the Smart TV hacking community is not that active.
https://github.com/RootMyTV/RootMyTV.github.io
https://xdaforums.com/t/getmein-one-time-rooting-jailbreaking-tool-for-webos-lg-tvs.3887904/
Nice it seems that DejaVuln will work! Thanks :)