when you get a profit then you can enter it again for your larger trading capital. and you can do it repeatedly. this method might work if you don't trade for daily profit. especially for your needs. if you withdraw the profits you make and leave your capital with a fixed amount, then your trades will not progress.
I agree with your opinion, because indeed if we withdraw large trading profits, and only leave the capital unchanged from before, then the capital will definitely not increase. and I think it should be added, by using enough money for daily needs and only buy what is really needed.
of course the risk that must be faced is also greater, it is better indeed with enough capital to be able to earn profits every day.