So yeah i'm just wondering whether can you make serious money with trading or is it more than not just gambling?
Sure we can, with enough practice , patience , keep learning and also with luck factor, we can make some money, but it's bit of gambling too, but the odds are better than gambling.
Are "pro traders" making millions, or are they barely getting by and need to sell their signals and such?
yes, there are traders that made, and still making millions, we can find stories about them just surfing bit google, So it's true, but to make that their investment and previous losses are also considerable.
Not in a bull market anymore so i'm looking at trading as a way to make money, but not sure whether it actually works. Note i'm not complete newbie, but i was never really trading.
in a bull market we can always make money just for holding long enough, but even with that there are day traders that still make average monthly salary from one day trading..
It all comes to keep trying, and keep learning until one is fully confidence.