I like gambling and I play such casinos rather often but I'm not obsessed with this, for me it's just an other fun way of spending my free time {XD} And it's possible to win money with their help but usually such prizes are really small. It's really the truth that such games are designed for making players lose not win so hopes for getting big money in casinos are stupid. In my case I was lucky rather often but again I won only rather small amounts of money and I've never gotten a really big prize. I suppose that it's possible but in my opinion in general you'll lose much more than win and if money is your main goal in this case (not fun like in my own).
I like to play
netent casino, it's one of the biggest resources devoted to online casinos which many players use and it's nice for the start. But be careful with scam! It's very widespread in case of online casinos and in better cases you'll simply win nothing, and in the worst ones you can lose really much money from your credit card etc. Always check the rank and reviews about certain games before playing and I also advise you to look firstly through special tips for finding a really safe casino, there are many articles about this.
Good luck!