Yeah, i've made deposits when betfury was just starting, not $2k but some. I don't think you would get nearly to lvl6 just by faucets. And after my deposit i farmed more bfg with the dividends i got from bfg. Then i just sold everything when it hit the markets and stopped playing and haven't played with my own money since. I was waiting for them to have somekind of plan for the inflation problem until i bought back the tokens. But that never happened.
You are not doing anything wrong as there are multiple players who do the same like you. Everybody can claim the faucets as many as they want (offcourse not abuse it) and I do a similar system like you that I just play with my dividends to get more BFG tokens.