[I cant even manual level my Ultimaker 3, the screws are all the way out and there is still a huge gap between the nozzle]

The default air gap between the aluminium base and the bottom of the heater PCB should be about 14mm. It's fairly important to not stray too too far from this as it can cause issues with the automatic bed levelling.

What I'm guessing is that you are using the screw in the back to adjust the bed during the first step? This is wrong, you should be rotating the menu knob to adjust the bed height for the back position. You only use the screws for the front two positions, not the back, always use the menu knob for that position.

my menu knob does not move the bed, should i take a video of everything the printer does and i do to it?

[I cant even manual level my Ultimaker 3, the screws are all the way out and there is still a huge gap between the nozzle]

Please help