How to get rid of useless Governments, Politicians?

That is the question asked by many unhappy citizens - not only in dictatorships but also in most democracies.
There is of course no perfect solution, as there is no perfect democracy.
But giving the electorate to initiate recall referendums would be a step in the right direction. There would have to be stringent regulations to prevent abuse, a quorum to have a referendum held, then a high hurdle rate of support, maybe two thirds of those in support.
Better still to prevent the need for a recall to arise in the first place.
Direct Democracy on all levels of government would ensure that all political decisions are debated properly and individual politicians are forced to take a measured approach to governing. 
The threat of having all decisions to be subject to the scrutiny by the electorate would prevent any extreme, hasty or one-sided decisionmaking.