Combining short trips will save you money on fuel and car maintenance and reduce pollution.
Walk or choose the bike for short trips. This will save money and improve your health. If you live in the mountains, take an e-bike.
Speak with your employer about organizing your work and use the technology to save car rides to your job, at least once a week.
Instead of saving money on food with specal offers in the distant supermarket, save it on fuel.
If the cost of public transport is an issue for you, try to use weekend tickets, group or family tickets or other possibilities to save money on tickets.
There are websites to help you find traveling companions, or you could just ask around at work. Many cities provide a car sharing service.