Hoping someone can help here, i have no idea what i am looking for
Is there some sort of adapter i can plug into my TV to allow me to stream youtube via bluetooth from phone?
From what i can see there are usb and hdmi ports on the tv.

I don't think the sort of Bluetooth module you'll have in a phone will be fast enough to stream video. They're okay(ish) for audio as long as you don't mind the extra compression required to push music through the narrow bottleneck of a typical BT module, but video needs a whole load more data to pass through if you want to get more than a little low-res thumbnail video playing. That's why Miracast (Samsung/Android) and Chromecast use WiFi.

A typical BT module will max out at 1 Mbit per second. Even the latest v3.0 BT modules (which aren't in everything) don't go above 24 Mbit per sec. If you want to play videos then you're looking for a sustained through-put of 50 Mbit per sec or more. WiFi can achieve 50-150 Mbit per sec.

If you have WiFi at home then you might be better off investing on one of the dongles such as Chromecast or maybe a Firestick or an Android MX box and plugging that in to the TVs HDMI socket. These solutions are available from under £40.

Short answer, no.

You will need to look into Chromecast, assuming you have an Android phone.

I Sony smart TVs and blu-Ray in in the lounge and Samsung smart blu-Ray in bedroom I use my iPad min and I phone on Thame . I currently playing music though my Sony hi fi vie Bluetooth from my iPad but you can't use Bluetooth on tv and blu-Ray but you can on hi fis only as far asI'm aware aware that hop that's helps

Not just an Android phone, there are apps which support it for Windows and iPhone as well.