Faucet features in a specific site is present to test the game/site. It’s not in any form is free BTC to anyone.
If also by chance you made a good profit from faucet and try to withdraw, then also the site or sportsbook will refuse to process your withdrawal.
I don’t remember if stake.com provides faucet or not, but yes it has some bonuses, for which you can place the bets and if you lucky then can win also.
Nevertheless currently as far my knowledge, freebitco.in only provides faucet for the sports events.