how the country actually feels now we know how Brexit will affect us.
See, you say "will affect us". I think the biggest problem with every deadline-extension at this point lies in the fact that the entirety of Britain's domestic politics has been infested and taken over by Brexit, and even though the parliament might have not done its job in terms of Brexit (to put this as child-friendly as possible), the British people and the British businesses sure have.
The people who were looking to leave Britain because of Brexit have done that.
The companies whose business is severely affected or harmed by Brexit have moved their headquarters.
The jobs that are relying on Britain being in the EU are already lost.
One could say that a hard Brexit has already happened a long time ago, probably before the very first deadline. All the parliament can do at this point is make sure that it won't stay as hard of Brexit once the papers are officially signed, and the more they postpone this, the longer Brexit will have been able to do severe damage to Britain. What Britain needs, is a parliament that has the capacity to deal with domestic politics that - whether they will be affected by any form of Brexit or not - can only be dealt with domestically.
The real damage in Brexit lies in the parliaments over three years long and ongoing inability to deal with issues that made especially the marginal leave voter vote leave in the first place. Not the extremists who were always going to vote leave either way. The people who can barely even afford rent because of the property market bubble. The people who have lost their benefits because the distribution has been outsourced to private companies who are looking to make a profit. The people who see the massively increased cost of college education for their children, while the economy leaves them with diminishing returns for their degrees.
Britain has been in a crisis well before the Brexit referendum, and that crisis has - best case scenario - been put on hold since then, or more likely, worsened even further while staying under the radar because of the total occupation of any political activity by Brexit.
From that perspective, it makes total sense for me as a foreigner why Boris Johnson was put into the position that he is in, because at this point delivering Brexit at all is, unfortunately, the best thing that can possibly happen to Britain. He's not there to negotiate the best possible deal for Britain, that ship has sailed well before the first deadline was missed. Brexit has already happened, and Britain needs someone to redeem itself from the complete political lockdown that prevents it from dealing with any of the issues that brought it Brexit in the first place.