Having a problem with my golf again

I'll try and explain it as best as I can

Started about a month or 2 ago, can started making a noise like the wheel bearing was going, but jacked the car up checked all the wheels and they all were fine. That was about 3 weeks ago and the noise hasn't got any worse like if it was a bearing and I have done about 1000 miles since I last checked... and anything over 30/40 mph the car makes a nasty groan/grumbling noise. So thought it might be the CV joints, so checked them and there is only a small bit of play in them in and out(of the gearbox) which is normal but no play otherwise. And there is also now play in the wheels or any wishbone bushes

Then I was driving yesterday and it got a lot worse and the car didn't feel safe over 50-55 at all. The front end felt quite 'floaty' at speed, also when braking the steering wheel wobbles(but not the peddle) and pulls to the right and when you stop braking then it straightens up again, same with accelerating hard and letting off fast the car tends to pull to the right. And the ride has went down hill big time, only way I can describe how the car feels over rough roads is that it feels like the 2 front tries are really flat. Also I noticed when going up kerbs to park the car makes a metallic clunk/ girding sound
So had a look at the car today and looks like it might be the engine or dog mount?
Here's a quick video anyway ( car is jacked up and am using my hands to rock the wheel back and forth)

Oh and the noise is the exhausts moving
So could the dog mount be causing all of the problems?

Thanks for any help.