I believe the negative mood here has several reasons. A tricky situation, many see (big) problems with your project here and you see it differently. This leads to an exchange of arguments, which then turns into an exchange of 'niceties'.
You have described your past here. This is taken here as a starting point and projected into the future. Your argument is that you will do everything differently from now on.
You describe the present, you have no equity. Sorry, even if you study for a long time and get married, you can save up equity. If necessary, you have to wait and save for 5 years. In my opinion, you should not buy a house without equity. And you even intend to take on more debt to fake equity? It doesn’t look to me like you will really do everything better in the future.
You describe the future, you will have less monthly burdens than today. Sorry, I find that hard to believe, somewhere you miscalculated or didn’t think of costs. Besides the fact that you should form reserves for future costs, I estimate that a house awakens additional desires in you. What do you think, how much can be spent on all the great expensive playthings for a house and around it?
So the sum of concerns about the past, today and the future also makes me doubt whether you can manage it, or you will be happy.
Good luck!