Questions

Sorry should change razor every morning? I used to know in one, etc. and continue with the same position for longer.
I've been using a Merkur FUTUR .. It continues all right?
Thank you

You should only change your razor blade out when it begins to feel dull to you.
You may not need to change your razor adjustment number at all.

Se non ho risposto alla tua domanda, io non capivo.

You should be using your blade for at least 3 times. Then you will have a good indication whether that brand of blade is not good or your adjustment setting is off.
Potenza, Italy...my family were from Acquavella.

Most people on here use it for around 3 shaves you will find, but there are others who change every day saying blades are cheap and they like having a sharp one every time. I usually go slow with the first shave of a razor, and speed up a bit after it "breaks in" a bit, so multiple shaves on one blade are good for me. Try it and see what you like, also 3 shaves varies with different blades.