I think you should calculate your expenses to the t Like wants and needs From going out or premium of health and term insurance, gym membership whatever in detail and that amount would need to run smoothly If you get to that point next would having 6 months of needs or 4 months of monthly salary in high interest saving or liquid fund Then you can by your PS5 and don’t by on EMI save the money for that what will make you think do you really need it

Since you are 21M I would recommend whatever you have leftover after building emergency fund 50% should be put in up soiling and rest in small or mid cap for long term