Ender 5 Pro - nightmare

I recently bought an Ender 5 pro.
Since then, I have had 0 print successes.

On top of that the problems that accrue don't seem constraint, I can change nothing and another print comes out better than the last, but none are a successful
The main issue seems to be trouble with pushing the filament trough.

The first couple layers are fine (most of the time), But when I get higher or it starts smaller details / infill, the lines will get messy, eventually resulting in printing in mid air.
I have been troubleshooting for about a month, and still no clue what might be the cause.

Here some photos:
Attachment 15698
My most successful print (after 80% starts printing in mid air)
Attachment 15699
How all my prints look from the side
Attachment 15700
The first layers look good
Attachment 15701
The higher it goes the worse it gets
Attachment 15702
The base is beautiful, the smaller details and infill are horrible.

I must have leveled the bed a thousand times, and checked the tube (even replaced PTfe tube, nozzles, and connectors).
With no improvement whatsoever.

If anyone here knows what might be wrong I would love to know.