journal. Is making a living with CFD trading a SCAM or a CHANCE?

Absolutely! Moreover, I even think this is just the beginning of the journey. The more I learn about the market, the better my trading results get. Not as consistently as I wish, but I think that the less you rush on this matter, the better.
I like all of the conclusions you've driven. #5 in particular. It's a pity that so few traders pay attention to this detail.
Ahaha, yup. But that's what makes the observation so valuable!
In my case investigating the trades I didn't do and therefore they weren't reflected on my trading statement - that's what was one of the most enlightening experiences since I've started trading on a live account.