Saving will only make the amount of our money increase but its value is very likely to decrease due to inflation, while investment is a way to make assets increase because their value increases from time to time. Risk in investment can't denied but it's the best way if you want to increase the assets.
In crypto we need to invest in right coin so we can earn profit to buy more and sell if the coin can't give good return.
Saving while investing is still a possibility. For example I have been doing that for many years, some months I have life troubles, specially this past 4 months or so have been very very hard, since the start of October became even worse, so I couldn't do it.
However, normally what I do is put up 50 bucks aside each month and put that into crypto, I know it is not a lot of money for many people but I live in a poor nation and 50 bucks is only thing I can afford to do. That doesn't mean that I do not invest, I invest that saved money, but in order to have something to invest, I first need to save money.
I grew my crypto portfolio nearly 20x this way, of course the super increase in 2020 and 2021 was one of the main reasons why I grew it so much and not really my "talent" or something in investment. So, it is best to save AND invest at the same time.