Nothing is unhackable though is it?

You just need to find the right balance.

In my country we still rely on a paper process - which is very hard to tamper with but also has a bunch of problems - recently we needed to repeat local state elections because of such problems including shortages of ballot papers, unusually long queues to vote, ballots being delivered to the wrong locations, and in some cases voters being turned away. Many of these problems go away with digital voting - but then you have other issues.

I don’t think a perfect solution can exist