I'm neither a student or a professional. I just use it for fun, and very occasionally nowadays. I have a pirated version, like most people, so it's not costly for me. Otherwise, I would not be able to have it, since I have an extremely modest income exclusively from Steem.
My uses for Photoshop have always been varied. I downloaded it at first to do basic image editing. If I needed to crop something, that's what I used. I also used it for blurring things. Then I started changing backgrounds, adapting compositions in photos for Instagram, etc.
Later on, I started making Telegram stickers, memes and funny pictures. I made montages with people over weird backgrounds. I made a picture of myself standing in the middle of a war in the Middle East.
Then I downloaded Krita in order to draw because my computer with Photoshop broke down. I used that to edit pictures and made more complex and original compositions with a very cheap graphic tablet that I bought.
It lasted me a few months and I published hundreds of drawings, but now everything is broken and my computer can't stand Krita, but I can do basic editing with Photoshop, at least, so I'm back where I started.
I've never used Illustrator, Inkscape or any of those similar pieces of software because I'm a bit reluctant to learn the new interfaces. I should use Illustrator, though, because graphic design is necessary for business nowadays.
Okay, so self-taught and mostly for your own projects. Well, that's cool.
I've never heard of Krita. I keep trying to find something that will help with drawing, but haven't found the write combination of lag, feel and accuracy. They all seem to have something. Which means I go back to good old trusty pencil and paper.
I'd have to get back into though. There's always something to do and writing is easier for me than drawing is. Or at least drawing things the way I want them to turn out. :)