Making profit on demo doesn’t always mean it'll be the same when you go live. A lot of people complain about making profit on demo only to keep making losses once they go live. This is because on demo, there’s no real pressure, so it’s easier to stick to what you've learnt but once it’s your real money, emotions and overthinking get in the way and that can mess with your decisions.
Also, sometimes people move to live too quickly before fully understanding how the market works. But if you feel like you're good to go, then don't let fear hold you back. Just don’t expect it to be smooth right away. There’s still a lot to learn as you go.
You’ll need to keep up with the news, keep practising your analysis, and stay calm even when things don’t go your way.
Having a mentor or guide is also very important, especially since you're still new.