I'm so happy my desk is behind our living room (behind the TV wall specifically) I have a HDMI and USB cable running from my desktop to my PC. In the living room I watch movies, youtube,.. hell I even play GTA:O sometimes in my living room, all from my PC.The problem isn't my phone, it's my TV! There isn't really an alternative for my TV (not an android TV, just a basic LG smart TV), so I'm stuck with ads.
I've been thinking about setting up a PiHole, but haven't gotten around to it yet.
You can always move your current TV to the bedroom/basement (if you have a man cave type of room down there).I used to have a similar setup, too. But, I switched to a RasPi running KODI, as that can be controlled with my TV remote, and that's just too damn convenient.
Logically, the best way forward is to just splurge and buy a new Android TV so I can install YouTube Vanced