Login and microsoft email

So i bought a new laptop, I open it and of course I want to create a new microsoft account with which i can log in.Microsoft asks me for an email, I write my email and the account is created, great I can use my laptop.Then I see that the email is wrong, I try to change the email but i cant for some reason, i add another email with the hope that I will be able to delete the first one but no i cannot, I accidedntally clicked something on my seconf email saying it wasnt me who sent this email so the second email is blocked. I added a 3rd email this time fully correct and accesible, 1st email diss