In the first place you can really trade even if you don't have a source of income especially if you have an idea or knowledge here. Because for sure you can get profit here little by little.
This is just an example, just ask for funds from your family or friends.
But as long as you can have a source of income so that at least you have a source of money so that you can carry out trading activities anytime you want to do it in this field.
I know that there are full-time traders whose source of income is solely from trading. But for a newbie who lacks basic trading skills, there is a need to seek other sources of revenue because he cannot survive on trading profits. At this early stage, losing will be steady which will lead to loss of capital. It will be better to have another source of income that will help the trader survive as he gains more trading experience.
Borrowing money from family and friends for trading at this early stage is not advisable since that money can easily be lost. It is better to lose your own fund than to be indebted. Experience traders can borrow to invest since they know how to manage their trading business.