You can trade even if you don't have a stable source of income if you're just starting out, because I started out like that, I was just doing sideline work at that time, then I worked part-time as a helper at a market and a salesman at a store in exchange for a small amount of money that was paid to me.
I endured all that just to have an income, even if it was small, and some of the portion of my income I put into trading worth 10$ as a practice while I was still studying before this,
as long as I didn't stop or give up. But my patience paid off.
I agree with you that we don't need to wait until we have a stable income to start thinking about investing or trading, but we need a source of income to cover our daily expenses as well as capital to trade.
I appreciate what you do and your efforts. But OP's case is different, he doesn't have any source of income and is planning to borrow money to trade. So I think he should not start trading until he has a job and income, regardless of whether it is stable or not. Never borrow money to trade, it is not the way to start as trading is very risky.