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I’ve been on and off with Linux for about 15 years and just want to counter some of the people trying to troubleshoot or criticize to say: it can be really tough.
We need our computers to work and we expect things to function correctly.
I’ve used dozens of distros over the years. I was a super early Arch adopter, mained Gentoo for about three years, ran my own BSD server for programming projects, and still maintain several small home Linux servers. And even I sometimes want to pull my hair out trying to get semi-new hardware working right in my distro of choice. I spent three hours today fighting Nvidia and sound drivers and eventually just had to give up on that machine after being told that what I want just flat out isn’t supported in Linux on the hardware I have.
Take a breath, set it aside until you’re ready to take another crack at it, and know that it’s a journey. You’ll get there or the software will catch up and meet you halfway. No shame in being frustrated :)
I bought a new TV last year after my Hisense kicked the bucket and had a similar experience.
Not sure if it applies to your situation, but I just factory reset my TV, never enabled wifi, and hooked up a smart device I had lying around (Nvidia Shield). Now it all works great and if the smart functions upset me I can throw just the smart TV part in the trash and go back to my VCR.