No its not possible. Since your WebOS is already outdated kind off, Its better to get an external device like fire tv stick or mi stick or airtel xstream box. You will have a host of options.
Just get an external device, why take unnecessary stress when a 2000₹ device can solve all your problems. Its with all OS, support is discontinued sooner or later. Netflix recently stopped supporting a series of Samsung TVs and Sony as well.
Hello friends, i think i found a way to downgrade 2017-2020 models tv (now its not possible by using current methods). The process is carried out through a computer using an RC232 cable. Can we overcome the obstacle to revert to old software using this method? Do you think this is possible? The link I provided is in Turkish, but you can translate it into English.
https://www.muratsever.com/lg-tv-yanlis-firmware-cozumu/