Cat becoming more aggressive, Vet appointment last month went fine?

My cat is more aggressive than she was before. I can’t do anything without her getting annoyed. I am cross posting this, I went to r/ Cathelp but hopefully it’s okay to repost it here.

My cat is aggressive when I work at my desk, when I do laundry etc. I don’t know how to help her behaviour. She’s attacked multiple times (minor scratch marks).

I’ve had my cat for five years now she’s around five years old. Got her from someone that had a household of pets and kids, in which I believe she was only 2-3 months old when I got her. They found her randomly on the street.

She has moved with me recently about three months ago into a new place. She was living with me and my parents, but when I moved out, I took her as she is my cat. These past few weeks, she seems very territorial more than usual (kinda always has been sassy). When I work from home at my desk, she’s always sitting on my laptop and every single time I try to move her. She gets a very aggressive and attacks me claws and bites me. She bunny kicks, and even sometimes gives me the airplane ears, and there are times where I honestly think she’ll scratch my eyes. My desk isn’t very big so that might be why she’s frustrated. But I cannot have her keep being aggressive like this. I even tried to do my laundry and she sat in my clothes, kept growling, hissing, and swiping.

She has adjusted pretty well to the place that she is not scared of neighbours noises and not hiding under the bed like she did the first week. However, I work from home so she is always with me. She went to the vet a month ago and all her checkups were fine. She’s always had a short temper ever since she was a kitten. She HATES getting her paws touched, and hates when you move too much when you cuddle (she’ll grumble/growl and get annoyed and move off my lap. Always been like this lol). But she does have her moments when she’s very loveable, snuggly, and she sleeps with me every single night right beside me. She gets excited when I come home and always meows and dances around my feet.

It’s just my cat and while I wish to get another cat… I cannot due to my apartment limitations and also it is very expensive (litter, wet food and vet bills etc.). I do not know how well she would adapt to a different cat as she’s been on her own since I got her. I play with her every single night for about 30 minutes, and even during the day for 5-10 mins randomly throughout. She’s not super active so she becomes uninterested pretty quickly. I have a small cat tree for her, and I have a cardboard cat house. I have lots of toys and I tend to give her catnip and silver vines to keep her entertained. She has an automotive feeder that gives 20 grams of food three times a day.

She goes up on my counter and even on my cupboards (although she gets aggressive with that too cause it’s hard to get on top so she gets frustrated. I cannot build anything due to renting)

I just don’t know what to do with her aggressive hissing, meowing, bunny kicks, attacking when I am working at my desk or doing tasks like laundry! She gets super annoyed with me even if I slightly move my arm. Again, she’s always been like this but it is worse now, worse than ever before.

Cat Age: cat is 5 years old My cat is a female, she is spayed Vet: everything was fine at the vet month ago. Main issue: aggression when she wants to sit in my desk when I work, when I do laundry, when I move to much in the couch. The ONLY change from this month I would say is I have been out the house a bit more due to social life. And that her dry food changed within past month. But since a few days ago I stopped giving her the new dry food and went back to old

I cannot afford another cat and I cannot have another due to apartment.