3d prints are coming out horribly

[Areyan 0]

 have decided to use my 3d printer again after a while (ender 3 v2) and i bought some new pla filament, when starting new build it failed.

 the supports were very flaky they looked like it was just extruding mid air, even though i repeatedly made sure the build plate height was good,

the supports didnt support anything so nothing was built.

 

when i tried another build that didnt require supports my 3d printer would stop printing half way through (i dont know exactly what happened between the time it stopped printing as i wasnt there)

 

this isnt a one time issue i have tried for a week my printer is on 24/7 trying again and again but still the same problem. stopping mid print and if supports are needed then it cant even start.

 

sometimes the pla print is smooth sometimes it isnt. 

 

i print at 210'c and have tried 195'c but still nothing changes, i have 55'c-65'c build plate temp. i use cura btw. i am certain there isn't a clog in my print because it works fine when i start another print but again half way through it decides to stop printing again. i have messed around with extrusion and it still hasn't changed anything 

 

the picture of the flakes it literally the supports it sounds ridiculous but that is literally the supports 

also as you can see in those 2 unfinished pieces of plastic when it starts to stop printing it starts becoming gritty around the edges you can see spikes coming out 

 

with all of these issues i have not managed to make a full print in this whole week with my printer on every night. every time i wake up and it has stopped half way through with many flakes everywhere

 

 

when i start printing it prints on the build plate then gradually goes up and makes thing worse 

 

 

 

in this picture i stopped the build just before it started moving up so this is basically the first layer of supports 

 

 

 

non of this explains why my prints stop mid way through.

[Areyan 0]

also i forgot to add that it has stopped extruding all of a sudden when on the supports, the extruder just reverses. i dont know if this is because its printing mid air.