...90% of Stock Market Traders are in Loss...
If that is not enough for you to take day trading as a career then go ahead.
How much sustainable, repeated profits are available for the 10 to 20% of traders who are successful? Savvy, winning traders are rare but they do exist, and - unlike gambling - you have a real chance to win long-term since you are competing against other traders.
Yes, there are traders who have an edge over others because of insider information, unethical practices, servers located near exchanges, high-frequency trading, etc. But to an average Joe there is no sustainable money.
Don't day trade, you're going to lose your money = Good advice for you and many others, but a horrible thing to say to a young person with potential to enjoy a great career as a successful trader and investor.
Why do you think so? Please explain why it is sound advice for an experienced trader but not so good for a new trader. It does not make sense.