So firstly, I’m back! New drawings out soon

Ok so my procreates been glitching recently-
Firstly, when I zoom it sometimes draws lines instead, it’s probably just me
Secondly, it’s randomly putting dots on my drawings when I never touched where the dots appear

Sometimes when I draw lines they either disappear or the end of it curves.

Does anybody know how to fix this? It’s making it take longer to draw and it’s getting annoying ;w;