They aren’t burning fossil fuels. They’re burning CHOOH2, which is the product of a genetically engineered plant.
Everything else has already been addressed by others. It’s a dystopia. Public transit exists in universe, but it’s very dangerous (as is the rest of the city). The corporate solution is to upsell you cars.
I’ve used OnlyOffice (FOSS, really modern) and Softmaker Office, which is a proprietary German alternative with native Linux support. It also has the best docx compatibility of the Microsoft alternatives.