Do you need a good broker to succeed in trading? Or does it not matter?

Well, yes, you can try it on your own but I would really recommend you to get help from an expert to see real profit. I know about this because I'm a trader, I use this forex trading journal called the Daily Forex Journal, https://www.dailyforexjournal.com/, their experts review and examine some of the world’s leading brokers to help you choose the best one.