Get rid of addictions/habits: addictions or habits (in mild cases) are harmful not only for your health, but also for your finances. Cigarettes and alcohol are responsible for consuming a large portion of the income from individuals living on minimum wage. It's not that unsual to find people spending at least 1$ on cigarettes daily, what after 1 month will result in 30$ expenses, which could be going into bitcoin investment, for an example.
Addictions go past cigarettes and alcohol, there are many other habits that can put a hole in your purse and not all are dangerous to Health, there is also gambling, womanizing etc. Keep a strict budget that still has accommodation for the things you like and try to stick to it, to help put it under control.
Shopping on physical stores is more expensive than shopping online.
Are you for real? maybe this is applicable in your locale, but in my location, It is easier and most times cheaper by some amount when you buy most items from a physical store. Some online vendors have charges plus you also have to consider delivery charges that you must include for your order unless there is a free delivery offer.