well you can do both saving and investing with bitcoin you just need to convert your money into bitcoin and just hold . because bitcoin itself is also investment nowadays where you can save you money while getting profit because of the mostly price increase .
That's right, the price of bitcoin at this moment is already high. I don't need to invest my coins in other websites because holding it is already investing for me. Whenever I need money, I just convert it to my fiat and request a cash-out.
however you can also grow your bitcoin by doing alt coin trading so you can make more bitcoin and more profit from bitcoin while the price increase is approaching and after you have successfully made a profit from alt coin trading your money will be possibly grown or maybe it will be doubled . by the way we have the same situation I am also doing the same thing you do whenever I need money .