Hello 3D printing experts...I am stuck on my 1st print not coming out right. After two prints, I finally got the X axis belt tight enough to print the test pig and it came out quite well. I tried to print a filter holder for a PPE mask (makethemasks dot com) - the prints keep leaning and I can't seem to get this filter holder printed. I have adjusted the eSteps in various increments, still leaning. I have made belt adjustments too. I have emailed Creality as well since I have heard that their support might assist as well. I was so excited when the pig finally printed properly and now I am struggling to get even once mask filter holder printed after hours of tinkering and reprinting. I have also tried to print the ear saver (show as a long mass in the lower left corner of the photo), the base stuck to the item and I could not get it loose, it just fused together. sigh. I know 3D printing is supposed to be a fun hobby, but I am sure getting off to a rocky start. I want to print PPE masks and be helpful to my community by donating to hospitals. I hope one of the settings recommendations help. I tried to research adjusting the jerk and acceleration settings. Not sure what to set those to with the Ender 3 Pro.
This looks a lot like layer shifting, both gradual and sudden. This is frequently caused by excessive friction on one axis, the one along which the print is leaning. You mentioned tightening the X-axis; if these are leaning along the X axis, chances are good the belt is too tight and causing something (either the belt or the toothed gear it is attached to) to rub against something else (the frame, the v-slot extrusion, the motor itself in the case of the belt gear).
Both the X and Y axes should be fairly easy to move by hand with the power off. Feel for any points where that isn't true.