Nyuko,
first of all, teach us how to run good
. There seems to be nothing outstanding wrong when looking at your stats. I am not one of those "doctors" who tell you that your PFR could be 0,456 higher. I look at your game, how you play and how you think.
For example, 2 players can have a cbet stat of 70%. But one KNOWS and UNDERSTANDS when to cbet, and the other not. One player wins a lot, the other not. On the surface they seem to be playing similar. But in reality they are worlds apart. That's what is most likely going on in your case.
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Second, my personal opinion on "free" is that you always get what you pay for. I have made a few free things as well, but they are more of an invitation for the cool things you get when you pay.
You might think i am biased because i happen to be a coach who earns some of his income by coaching other people for money.
If your bankroll is $500, of course you shouldn't buy a course for $700. I think it's most important for you to figure out
WHAT exactly you want out of poker.
If you just want it to be a hobby and nothing else, that's a fine choice. Then please don't spend money on high level courses like the ones i offer. Just participate in a forum and simply enjoy playing this awesome game. I have told this many people, because i thought it was best for them.
However if you have high ambitions, you gotta be willing to invest in yourself. There is no way around. You should invest smart, but i am a strong believer in the old saying "there is no such thing as a free lunch" .