@Ari-Sorokin
Try Paint Tool Sai Ver. 2 for PC or ProCreate for the iPad. It's just a one-time purchase for either program. I used a pirated version of PTS 1 and PTS 2 for a decade, before finally deciding to own it legally. I must have paid no more than $50 on it.
Krita is okay, but in my opinion the art and brushes are kind of crude, so I eventually lost interest in using it. I think it's better if you're drawing comics with a "natural linework" look or painting landscapes.
I also have Photoshop as part of an Adobe premium plan that allows me to access to other programs such as Illustrator, after effects, premiere, acrobat, InDesign, etc. But admittedly it's a tad expensive.
As well as CPS, but the fact I need to constantly pay for an update is a real drag, even though it's considered the "superior" version to PTS.