1/ Do anyone here reads the chart like a pro on exchanges or trading view?
To me there are no "pro" in the crypto scene when it comes to trading especially on coins that is heavily speculated by the masses, why? simply because it is so hard to predict. These 'pros' that you are calling is just a person whose prediction comes to real more often, then they shared it with us. The title pro is not necessarily mean that he is winning, some are just sharing what they have won not what they have lost.
2/ Or look at the futures open interest position on Bitmex to figure out if the support/resistance will be a factor?
Futures trading is fun until it is liquidated, I''ve tried it for many times and fairly enough it is a fun risky game for me. The resistance is a huge factor in futures trading, that is where I based my position in the market, the stronger the resistance the safer you get to your position.
3/ What are the top 3 main factors that drive the top cryptocurrency price movements, in your opinion?
There is just one that I think, SPECULATION.