Well I can only agree with you.When you don't have the time or the conditions to practice , it will not help.

There were women at the dancing school , who never did practice at home.We are only talking about the basic steps.

Not to dance with a partner , yet.

And they surely got into problems , because with every new block of lessons , the tempo would go up.
And there were women , who were not practicing the correct procedure , to bend the leg.

And to straighten the other leg.This also was causing problems in the dance.

I am not saying that it is easy to learn the basics right.Only with much practice , will you get a good result.

But maybe one day you will start with it ... ?