what temps and speeds have you tried ?

Also - have you tried slicing with a different slicer.

And does it stick on a different model ?

Also consider mounting the extruder on the hotend carriage for a dirct drive setup.

Bowden tubes create a lot of friction and it changes all the time, as the angles of bend in the tube change.
I've never yet seen a creality printer where they've given any thought to the tube length and placement.
And with a standard cartesian printer - like the ender 5 - a direct drive conversion is just the very first thing anyone should do.

Switching to a direct drive extruder setup, removes the constant changes in friction, giving a more even and smoother flow, and also massively reduces the lenth the filament that needs to be pushed.

Also Have you levelled the bed since the problem started ?

Unless youve already changed the levelling nuts to nylock locking nuts - then the bed will stay level for a couple prints if you're lucky.
Change to locking nuts and it pretty much always stays level.