TDV8 - Lack of power / Smoke

Hi everyone
Just wondering if I can get some ideas with some issues Iam having with my TDV8 2007 It has 150000 miles .
The car starts fine and moves fine but it lacks power, I press the gas fully but it just struggles to pick up power but once it does seems ok. No lights on the dashboard. Also when I start the car white smoke comes out of the exhausts , especially from the passenger side and even when I press the gas and the car picks up power white or black smoke comes out too.
I was pressing the gas yesterday just to hear if the engine was going to make any funny noise and lots of black smoke came out of the exhausts + oil started leaking below the engine ... i dont think doing that was a good idea‍
Im going to drive it to a specialist tomorrow but Im a bit scared because there is not even engine oil anymore and I am not sure if Its a good idea to fill it up now as I dont know what the problem is!
Maybe some of you guys had the same problems/symptoms and can give me some ideas . Im thinking is the turbo or the EGR valve . Any response will be very much appreciated. thanks

Initial thoughts are turbo/turbos u/s.
Do not run the engine anymore until at the mechs.

Yes thats what I think too . I’m having another look this morning as Im waiting for the recovery truck to come and take the car at the mechanic and I can see oil in the area Ive marked in the pic. Any thoughts?

Hello and welcome
it does sound like turbos.

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