If I Miss Sunnah Prayers Due To Laziness Or Travelling

If I were to miss an emphatic Sunnah, Sunnah Muqqadah, we know that there are 12 rakas during the day and night, if you manage to offer them regularly, Allah will build you a house in Jannah. what are these rakas two before fardh prayer of Fajr, four before duhur, two after the Dhuhr after Maghrib and after Isha.
These are 12 emphatic Sunnate Muqqadah.

The prophet صَلَّى ٱللَّٰهُ عَلَيْهِ وَسَلَّمَ never left them when he was in Medina. He used to skip all of them with the exception of the rakhas before Fajr, whenever he traveled.

So when you say to me that whenever I travel shall I make them up and says no, because the Sunnah is not to be made up. What about if I miss them, whether I was lazy, whether I had a meeting I forgot them, there’s no problem in making them up, inshallah if you had the legitimate reason and if you did not have a legitimate reason the reward won’t be the same but again still you can make them up insha Allah.