I think it's great that you were able to take your bets to a high limit, 7500BFG is a very large sum, at least for me it is, have you thought about leaving it in staking mode? In this way you generate a lot of money in currencies such as BTC, ETH, TRX, I recommend it because I have my balance that way and the truth is that it works very well for me, I have also tried biswap and it is not bad. everything, but really what you say is very true, each bet on sports has a lot to do with the degree of experience of the bettor, in my case I have more experience in soccer, and also in boxing.
I seriously can't even imagine turning 340 into 7.5k, that is a seriously big achievement and I couldn't do that at all. It is definitely something that should be congratulated, it is a big achievement. Staking does sound like the way to go, that way you would basically be making enough BFG for the rest of your life to gamble away if you want to, or you could make a profit basically and just grow it.
The other day I remembered a website where I had like 1-2 dollars since May, and recently I checked it again and it was 16 dollars, not like I intentionally invested into it, I just passed money through that project and that's it, the leftover amount was just the dust I had there, not an investment but I said might as well stake when I am there and since nobody cared about that project it grew up. We won't make that much probably with BFG since people love it, but we could make a good return for sure.