Under extrusion?

Hello I think I may have under extrusion I have a flashforge adventure 3 and we use their slicing software but I use cookiecad pla filament and cookie as software. If I draw them out they usually have this problem on the inside wall but if I buy an Stl file from someone like kirkie kookies they print perfectly? Please help!

It seems your printer is having retraction issues. The cutters STL you bought probably has thicker walls, and so the issue may be hidden inside the infill. You can try using thicker walls but your best bet is to troubleshoot the under extrusion. Feel free to ask for help in the #get-help-3dprinting channel on discord.cookiecad.com as well.