For context I'm in the US. The last time I used YouTube without an ad blocker, there were 2 ads back to back, and way too frequently. I tried watching on my PlayStation tonight, and not only are they more frequent, they've increased in quantity by 150%. It's also very common for the last ad to last 2 minutes to over an hour long. What the actual fuck, why would anyone watch YouTube without an ad blocker at this point? It's literally unwatchable
Edit: the amount of unsolicited advice in the comments is unreal. I don't get ads on my phone or on desktop, I'm very aware of how to block them. I simply won't watch YouTube on my PlayStation anymore. I'm not looking for suggestions, please stop with the recommendations.
I'm watching YouTube on my LG TV quite often. It's not unbearable yet. There's never more than 2 ads. Never more than 30 seconds in total, otherwise it's always skippable. Skippable ads now and then.
It's not great, but not terrible. I'm based in the EU for context.
Sorry it won't work for you, but I wanted to throw out for anyone else reading thing: smarttube does let you sign in and have watch history and stuff, yes. And smarttube can also be used on amazon FireOS tvs.
I have an LG 55C8 and was able to root it (somebody figured that out last year or so). I don't know if you still can root your model, but I'd look into it! There's a patched YouTube app which incorporates ad block and even sponsor block! It single handedly prevented me from buying an Android box and skipping the TV's smart features altogether.
On newer webos, you need to enable developer mode and then you can install homebrews (adsless YouTube, kodi and more), without the need to root.
The downside is that to keep the develop mode apps for more than 48 hours, you need to setup a crontab or an ittt job to connect to LG servers to automatically renew the developer token.
That's pretty cool. I'm too scared to mess around with my TV though like that. Like I mentioned it's not unbearable yet, but when it becomes so I'll just uninstall I guess, and cast LibreTube or something from my phone to my Chromecast. 👍