I'd say depends on how small the savings are and what kind of investment you're looking for? Bitcoin regardless of its being up since its release after a decade, is still a risky investment imo. After all it's not like you're investing from the start, you're investing now. And it's pretty volatile as we know so really, if you can risk it sure go ahead. But if you were looking for something solid to invest in, I'd go for the usual options that people get, e.g. the 401k in the US. Even holding it in the back can be safer sure, still lower gains though but yeah, safer.

Maybe instead of looking at you're savings, look at some expenses you've been having but don't necessarily need to, well, spend? E.g. all those subscriptions you have to Netflix, Spotify, etc. I reckon that's a lot better as an option.