Well if you save money in bank guaranteed to have a profit while in Bitcoin is too risky but its defend in you.
If you know what I mean. Sell it low price will not make profit. Sell it in high price then it will make a profit.
Are you serious with your term guaranteed? You mean if you invest in bank you have the assurance thay it can earn profit? Of course not. If you are saying "saving" yes it does but super kunti lang. For 1k, 5-10 pesos a year ang profit mo.
With investment fyi there is no guaranty na mageearn un ng profit. Sabi mo nga nababa ang price/market kaya talagang loss/lugi ka dun. So there is no guaranty.