I think your $40k USD loss answers your question. Stick to index funds. If I was willing to lose that much money I would do something cool like start my own fashion brand or something.

If you want to understand how some people make money trading stocks, see

https://www.sciencedirect.com/science/article/pii/S0304405X9...

(obsolete because HFTs are doing something similar)

Look at algorithms used in "automatic market making". Also this book

https://www.amazon.com/Trading-Sentiment-Power-Markets-Finan...

is by some people who did something a lot of us thought about circa 2010 but they really did it and succeeded. Also

https://www.amazon.com/Hedge-Funds-Perspective-Financial-Eng...

Like the first article the last book describes a strategy which has long burned out but if you are making money by quant trading today it's because you discovered a strategy like that which hasn't burned out yet.

Personally when I look at charts I see levels of support and trends (doesn't there have to be someone who thinks that $40 is a bargain and buys heavily when it dips below that?) but the literature doesn't support it. On the other hand I don't believe in the occult but I am still really good at Ouija boards, talking to fox spirits and stuff like that.

I never took "head and shoulders" and other patterns like that seriously.

I've tried that and failed but I was using a crappy commercial sentiment analysis engine.

These guys succeeded though and wrote a great book about it

https://www.amazon.com/Trading-Sentiment-Power-Markets-Finan...