The problem with that is that the average citizen cannot possibly keep up with and stay informed on all issues that the government makes decisions on, and for the most part they don’t want to have to either.
That is why representative systems were created in the first place, so the average person would not have to bother with politics and instead would vote for someone they trust to represent their interests for a while.
That’s simply unrealistic to implement right away though. The best realistic system I could see would be the Swiss system except online.
There the citizens vote on all major decisions, requiring politicians to either take on issues of importance to the people or to make their policies palatable to the general population if they hope for it to pass.
This seems like a reasonable middle ground to ensure that citizens stay informed and engaged - at least on big issues - and that their leaders are generally required to consider the wishes of the people.
I could see monthly or bimonthly digital voting on a handful of current issues work out well, provided they are presented in a digestible format to the average citizen.
If people have to do hours of research to even understand what the question is they will very likely just vote whatever or ask their friends what they voted. Worst case even sell their votes on issues they don’t care about.