I installed several times the qt creator but it never cost me as much as in my current PC; First I used the installer that always had on my Pendrive (that of Qt 5.8), told me that I could not download some repositories, I downloaded version 5.9 of the same installer, with the same result. After trying to install it several times and it did not load I went to another house where I managed to install it, although I had to be very aware of many errors coming out of missing libraries (while installing Qt 5.9). After this I had to download the sp1 for my win7 OS through "windows updates" to run the Qt creator, but later, when loading, creating or running a project, I would say in console (it does not matter if it is GUI) the following : "Could not determine which" make "command to run. Check the" make "step in the build configuration." I would very much appreciate your help to anyone who wants to advise me, because I have already had many problems with my computer, from losing everything (the previous hard drive had installed original win10) to a series of very annoying setbacks like this. I cannot post images, I have no more than 10 reputations.
edit 1: there are the images:
https://ibb.co/jcNp05
https://ibb.co/hMyU05
The problem is that the video you posted is for linux, but i thank you for your help. I need now more he