Help! new to 3D Printing

printer is an Eryone thinker SE.

I am very new to 3d printing and cannot figure out what is causing some of my prints to fail while others work fine i've bed adjusted so many times now, and tried doing with supports and without, nothing seems to work, sometimes I get a good print and other times its garbage a lot of these are printed in batches which might be what's causing it, I have no clue though maybe its too much extrusion, if any 3d printer wiz's can look at these pics and tell me what might be wrong and how I can go about fixing it or point me in a direction to somewhere I can get help that would be great thank you.