you can't really avoid spending too much, especially if you're extravagant. But if you can discipline yourself and control yourself, I think it's easy for you to save here. Set a budget for the month you will spend and then save the excess, but of course you also need to save for emergencies so you don't touch your savings.
I know it's very difficult, especially controlling yourself to not spend. But I think that if you do it, you will get used to it and it will be easy for you. Just don't be hard on yourself