Improve your Current Living Situation
The first thing that will cut down the unnecessary costs is not having to pay rent. Unfortunately, this is a very common situation, and not everyone has their own home. This should be your goal. Get your own house.
Even if it is small and the location is not in the city center, having your own roof above your head will save a lot of money each month. Instead of paying rent, you can put that money into your budget. Or you can use that money to renovate your home for the future.
We are aware that this is a long-term goal. Saving for buying a house takes a lot of time and waiver but it gets more profitable once you actually buy the house or the apartment.