a huge loss for the crypto market if that is the case, but now we are witnessing the crypto market trying to make a profit for those of us who still hold crypto assets like BTC, ETH, BNB and other potential coins.
BTC increased by 1.7%, ETH 3.3%, BNB 1.3% and for me this is an advantage that the crypto market provides.

I read it like you are risking everything in the world of trading. Well, I can suggest that it's a bad thing, especially that when you say that you don't know much about trading. however, you should realize that trading is a very risky thing. if you're using $400 to study, and it's not money that's important to you, I can understand that, because studying sometimes requires some sacrifice.
It would be great when you get another job that gives you a monthly income for your child, and learn to do this. I can't help much, but I can only give this advice. the world of trading is too risky for a beginner who tries to make a living there. it looks like gambling. if you want to learn trading, then study it properly, so that you can invest with accurate analysis and speculation.

I don't know which others, when i come first I look at coinmarket cap and learning a detil the coin I want to buy.

My friend ask me, what coin he should buy , but I not really sure for now because I'm entering cryptocurrency 3 years ago. Too many coin right now that make me confusing