EDIT I got a lot of helpful tips! My drawings are looking much better now, thanks guys! I'd say my question has been answered!
I recently had to switch to medibang because a) I needed a software that supports large file sizes and b) medibang not any other software was chosen because I don't have the money or computer
I just noticed that Medibang really defines the pixels, even though I'm working with print size at 350 dpi, which is average-ish sufficient. But even whenever I'm not zoomed in past 100% I can see little right angles all over my lines. On my old app, no matter how much I zoomed in everything would still look smooth and natural. Which one is the one that is supposed to happen in more professional softwares like Photoshop? I already tried increasing resolution but it didn't do anything,
EDIT okay so I found out about this anti aliasing thing, but on the iPad it seems like only the eraser and selection drawing too has it and not the general picture. I can't smooth down any lines I guess.l. I guess at this point there really isn't anything that can be done :/
Here is one of my drawings at 100% on Medibang (sorry for the crappy rough draft)
This is the drawing zoomed in
And this is another drawing zoomed in in my old software (the one that can't do large files e.g. Printing size) and although you see pixels, they are no where near as rough as medibang.
Thanks for the help!