1) What sites do you visit?
I like binance.
2) How much time do you spend on trading?
3-5 Hour per day.
3) What websites help you build your strategy?
4) What instruments do you need for a more precise analysis?
maybe like
https://www.tradingview.com help for analysis.
5) What is the biggest problem in trading for you?
I think the biggest problem Think of getting more profits in a short period of time.