- find ways to have cheaper bills. Sometimes switching companies for your electricity, gas or internet can be beneficial by signing on for a cheaper bundle.
- rethink all your monthly subscriptions. Are you really using all the streaming apps? How often are you really watching Netflix, Disney+, HBO, prime video etc ? Is there maybe a streaming service that you can get access to, through a friend or family member? If you're not using something regularly, you shouldn't be paying for it. And sometimes even the "free" version is not that bad. (I see no point in having spotify premium, the ads aren't even popping up that often)
-For a lot of people, grocery shopping is a huge expense. Very often it is due to paying for name brand goods, and prepackaged meals. Meal prepping can be a cheaper alternative because you're making meals in bulk. Cooking larger batches and eating leftovers for lunch/dinner can be a money saver if it works for you. (Doesn't work for my bf and I, unfortunately).
Like others said, it's also important to enjoy life. So make sure to include entertainment as part of your budget.
And at the end of the day, if there's not much you can change, you'll need to earn more in order to save more. Don't be afraid to ask for a raise. Nowadays it's often recommended to switch jobs every 3 years to earn more and to go up in your career.